The subject of defence is treated of in F.S.R., 107-110, I.T.,

125-135, and in Chapter VII., M.F.E., 1911. The duties required of

the company commander and his subordinates are briefly defined by

I.T., 132, to be similar to those they carry out in the attack. The

whole spirit of the regulations is that the active Defence is merely

a means to an end, viz., the ultimate assumption of the offensive,

which may be carried out either by the same troops which have acted

on the defensive or by fresh troops detailed for the purpose. In both

cases the troops that have acted on the defensive must be ready to

become the aggressors. Therefore, in training your men, you should

keep this constantly in view and conserve a spirit of aggressive

mobility. Men must not be allowed to think that once a position

has been taken up and entrenched it is to be their location till

fighting ceases; on the contrary, they should be encouraged to look

for opportunities while still on the defensive, to occupy alternative

positions which will make the task of the attacking enemy more

difficult. Quickness in seizing and strengthening a position must be

combined with mobility in leaving it to take up and strengthen a new

one. Of course, the time available regulates the work that can be

undertaken (M.F.E., VII. (2)); deep trenches and concealed head cover

cannot be made with an enemy pressing in to assault, but the first

requirement is the ability to choose positions that give a good field

of fire and to strengthen them as thoroughly as the time available

and the proximity of the enemy admit.

In dealing with a company, the onus of choosing what localities it is

tactically necessary to occupy and strengthen rests with the company

commander, subject to the orders of his battalion commander. In the

same way as on outpost, you will be given a bit of ground to defend,

either acting with the battalion or as an isolated company, and the

rest will be on your head. I do not propose to deliver a treatise

on the tactical occupation of ground, but instead I will ask you to

procure and read two books. The first is “The Defence of Duffer’s

Drift,” by Backsight Forethought (W. Clowes and Sons), the second

is “A Staff Officer’s Scrap Book,” by Sir Ian Hamilton (Edward

Arnold). They are both most readable books, and are quite free of

soporific effects. The first is small, and deals with the efforts

of a half-company, under Lieutenant B. F., to defend a drift over a

South African river. In the second the author takes you along with

him through the Russo-Japanese War, of which he was a privileged

spectator, and in your journeyings you look on at victories and

defeats in the making, while the causes that led to them, great and

small, are set forth, along with many shrewd comments on human nature

and how it translates itself in the day of battle. Every fight bears

its own lesson of what to do and what not to do in defence, and this

told in no pedantic strain, but with the saving grace of humour, to

mitigate the darker side of human carnage. Read them both, get to

yourself the wisdom and understanding with which they are filled, and

you will know how to take up a position for defence.

Having educated yourself to choose the points of a defensive position

that must be occupied if the position is to be effectively held,

you have still to train your men to the work of defending them, and

they must learn to be able to do without the help of a supervising

officer, as will often be the case on service.

Daylight defence is almost entirely a matter of fire, the immediate

object being to make it impossible for the enemy to come to close

quarters. Platoon and section commanders then must be able to dispose

their men with this in view to the best advantage within the limits

of the ground allotted to their units, and the men must be able to

site their trenches or whatever form of cover has to be constructed

so as to use their rifles to the best effect. It is no good to teach

men to dig trenches and make loop-holes unless they know the proper

places for them. (M.F.E., 18 (7)).

At the same time, practice in digging and the use of tools is very

necessary for men who are not accustomed to such work. The hands of

the untrained man blister and his muscles tire under the unusual

effort, while he expends much energy with results small in comparison

with what he can accomplish once he has learnt to use his strength

well. Moreover, a certain amount of technical skill is required in

making any but the most simple cover.

To practise the execution of work, you _must_ have ground which you

are at liberty to turn up, as well as some materials for loop-holes

and obstacles. These may not be obtainable at any and every parade,

but you can give practice in the selection and siting of trenches

on any bit of country without causing damage, the men merely

spitlocking or marking with stones or anything else the position of

the trenches on the surface of the ground, and describing what they

propose doing.

I would, therefore, advise that you make your training consist of

two parts, firstly the siting of trenches and the planning by unit

commanders and men of defensive work, the choice and occupation of

alternative positions, and the assumption of the offensive from the

defensive, all this without actually breaking ground, and, secondly,

ground and tools being then available, the performance of a course of

making real cover and obstacles.

But the first part cannot be carried out unless the men have a

knowledge of what trenches, loop-holes and so on are like, and the

objects with which they are made. In a company of raw recruits taken

from the populace at large, there will be plenty who have no ideas

on the subject at all. You must then precede your exercises either

by a short lecture, materials for which you will find in plenty in

the “Defence of Duffer’s Drift,” and the manuals of training, or,

better than a lecture, by showing them specimens of entrenchments

made by regular troops. The main points to insist on are the securing

of a field of fire, the necessity of concealment of the defences,

the importance of head cover as a help to the delivery of an

accurate fire by letting men keep the enemy in view without showing

up themselves, the avoidance of enfilade fire by making traverses,

or by taking advantage of intervening high ground, the provision

of cover from downward shell fire by making the trenches deep and

steep enough to let men stand close up to the edges, and, in the

case of isolated posts and points held as pivots of a position, the

necessity of preparing an all-round defence so that these pivots will

be able to continue fighting whatever happens on the intervening

ground. The course of work actually performed for the second part

should include digging all kinds of trenches, by which the men will

learn to use their tools to the best advantage, and their hands and

muscles will become hardened, the use of the excavated earth to form

parapets and parados (cover from fire from the rear of the trench;

forty inches of earth are needed to keep out a bullet), the drainage

of trenches, the making of traverses against enfilade fire, the

making of loop-holes and head-cover with the aid of all sorts of

materials, sand bags, brushwood and heather, straw and twigs, stones

and bricks (which must be covered with earth to deaden the effects of

splinters), packing boards, and so on, the concealment of trenches

and loop-holes so as to be invisible to the enemy (this is of great

importance), the masking of loop-holes when not in use to prevent

light showing through, the making of dummy trenches and loop-holes to

draw the enemy’s fire away, the improvement of existing cover, such

as loop-holing walls and the use of hedges with or without ditches,

making sangars, if stones are available, the making of obstacles of

barbed and plain wire, and measuring and marking of ranges round

a position, which should be done by some means not obvious to the

enemy, and clearing the field of fire. It will seldom be practicable

to obtain subjects for practical demonstration of some of the latter

in peace time; people will object to their walls being experimented

on or their shrubberies laid low, and so even here a description of

the method will have to be substituted for actual performance. For

night defence the construction of night rests for rifles is needed.

The best I know is a packing case, filled with earth, with the front

and rear edges notched to hold the rifle stock. The magazine is laid

hard up against the outside of the rear edge and the notches, front

or rear, slowly deepened with a penknife till the sights bear on the

target; afterwards earth is banked up outside the box and head-cover

made above. The foregoing may seem a formidable list, but they are

things that will undoubtedly be required as soon as you get on

shooting terms with an enemy; while if you exhaust this list and feel

the want of further occupation, the Engineering Manual will supply

you with further subjects for your activities.

Pending your getting facilities of ground, tools, and materials

to execute work, you can proceed with the first part of training

outlined above. If your non-commissioned officers have not had

experience, take them out as an instructional section in the same way

as when teaching outpost work, and put them through the exercises

which follow. But if they are already fairly competent, take the men

on parade, forming them, if possible, into not less than two sections.

_Instruction in Siting Trenches._

Choose any position on undulating ground, form the men in extended

order in one line in rear of it, and order them to move up, and

mark where each would place his trench in order to fire on an enemy

advancing from the front. In doing this it should be an invariable

rule that men must lie down, bring the rifle into the firing

position, look along the sights, and move forward or back till they

see that they have got the best position to sweep the ground in their

immediate front (see M.F.E., 31 (3)). Dead ground close to the trench

gives the enemy a place in which to collect and organise an assault.

Take the men in the same way on to other positions and repeat the

lesson till they all understand that the _first thing to be done is

this aiming with the rifle to secure a good field of fire_. At first

halt them close to what you see is the best line, and afterwards halt

them thirty or forty yards from it, and then give the order to choose

sites. For instance, halt them on the top of a convex slope and let

them find out that the best place to bring fire on to flat ground at

its base is somewhere on the enemy’s side of the convexity, for if

the trench were made on the top of the slope the ground immediately

in front would be hidden by the convexity. The section commanders

must help the men in choosing sites.

After the men have fixed and marked the proposed sites, let them lay

down their rifles three paces in rear and kneel or lie down at the

rear edge of the site as if waiting to commence work while you and

section and platoon commanders go round and examine the line. Ask

details from the men—how high they would make the parapet, how thick

it should be, how they would make head-cover, how they would conceal

the work, and so on.

_Traverses and broken lines of Trenches._

Repeat the exercise as above, but this time have the men in sections

or small groups, and the trenches made not in one line, but in

short lengths, separated by traverses. You will have to explain

the construction and use of these to prevent enfilade fire (if not

from long range), and to localise shell bursts. Again, have lines

of trenches mapped out in short lengths on an irregular front, some

a little forward, some a little back, with the earth at each end,

banked up on the flanks with the same object (M.F.E., 33).

_Short Trenches for Two Men._

Bring the men extended to six or eight paces on to a position, and

let the men of each file close to two paces from each other. Each

file is then to choose and mark a site for a short trench to hold

both of them, or, as it would formerly have been called, a rifle pit,

marking where they would make loop-holes to fire both to the front,

and obliquely towards the right and left, so as to rake the ground

in front of the line of the other men’s pits. This arrangement is

not officially recognised, and it does not give the closest possible

firing line, but it is an excellent way of making men think for

themselves.

When the men have got their bearings in the matter of taking up a

line for entrenchment, make them get into the way of changing from

defence into attack. Take up a position as before, and as soon as

the trenches are marked out, indicate a position at some distance as

an objective for attack and start an advance against it, as done in

the attack practices, forming a firing line rapidly of some named

platoons and the support of the others. A skeleton enemy kept hidden

till needed adds much to the realism.

_Defence of Pivots (M.F.E., 50 (3), and I.T., 129)._

Find a position in which there are some points separated from each

other which command the ground between, and also form such pivots

for defence of the position as are described in the paras. above.

According to the nature of the ground, such pivots might be, for

platoons, as much as four hundred yards apart, i.e., attackers coming

between them would be under fire at not more than two hundred yards.

Send a platoon under a commander to each pivot, and let him plan and

mark out his defensive measures, which must include:—

1. An arrangement for all-round defence, so that the pivot may be

self-contained and capable of continuing the fight, although

others may have been captured.

2. The siting accordingly of trenches and loop-holes to fire all

round and especially to sweep the front and rear of adjoining

pivots.

3. The adaptation of existing cover to save labour.

4. The provision of protection against enfilade and reverse fire,

and the _recognition of distant localities_ from which such

fire, whether of artillery or rifle, might be brought to bear

on the post.

5. The marking of ranges in each direction.

6. The provision of obstacles.

7. Any feasible scheme for alternative positions which his men

could reach and occupy under fire.

8. The concealment of the defences, provision of dummy trenches,

and loop-holes and any other shifts.

9. The telling off and posting of look-out men and fixing and

occupying of alarm posts when work has been completed.

10. Drainage and sanitation.

The concealment of defences from aerial reconnaissance will, perhaps,

soon claim more attention than it gets at present.

Practise an attack after defence, starting off one platoon under your

own orders to “go for” an indicated enemy, and sending word either

by messenger or by semaphore to the others, either to join you and

form a firing line, or to move out in support, but, if the latter,

do not fail to finally call them up to reinforce the firing line;

counter-attacks must usually be made with a relatively strong firing

line and small support.

_The Company in Defence Acting Alone._

When you have put non-commissioned officers and men through the

preceding course, plan some scheme on the lines of the defence of

Duffer’s Drift, to deal with a company isolated and beyond reach of

immediate reinforcement. Any bridge over a railway line, a group of

buildings supposed to contain stores, or a ford or bridge over a

river, will provide you with an object to defend. Choose a line of

defence round it and determine what are the essential pivots to be

held. To do this, so as to furnish an instructive lesson, it will

usually be necessary for you to pay a visit to the place by yourself

and formulate your proposed defence before bringing the company on

to the ground. Pay great attention to crossing and supporting fire

from the pivots, and look at the surrounding country with a view to

meeting attack from any direction, for in this case the company, as

well as the pivots in its line of defence, must be self-contained.

Also have regard to the certainty that you will have artillery

fire against you, to which you will not be able to reply, and in

consequence your proposed defences must include deep trenches or

recesses to shelter the men from shell. Your defences will take the

form of a chain of isolated groups about the point to be defended

and separated from each other by possibly several hundred yards. It

is no use simply to go and sit inside a group of buildings which

the guns would knock about your ears and against which the enemy

can concentrate. The better plan is to break up his attack and hide

your weakness by occupying well-strengthened pivots, behind whose

protection you may have some freedom of movement, and so be able,

if the weakness or rashness of the enemy gives opportunity, to

inaugurate local counter-attacks. These, if successful in inflicting

a sharp and sudden loss, will make him hesitate to deliver a decisive

attack till he has found out all about you. With one company you

cannot expect to achieve decisive results against any considerable

body of the enemy, but must be content with keeping him in play for

as long a time as possible, and an attitude of active bluff is the

best means of doing so.

When you have got your plans completed, take out the company

as strong as possible and complete in its proper platoons and

sections—if there are too few men let one man count for two or three.

Send off platoons to occupy and plan the defence of the pivots as

done when practising it before. Do the same scheme on two separate

occasions. The first time do not send out a skeleton enemy, so that

the men may have time to look round, but for the second time send out

some scouts under a subaltern, and let the platoons fall out on their

positions with patrols out in front. Fix a certain hour by which you

expect the arrangements to be all ready, and arrange for the enemy to

advance at that time, and open fire on the patrols if they are met.

When the patrols have fallen back the enemy closes in and starts

sniping at the position. Then bring off a counter-attack, withdrawing

some men for the purpose from pivots that are not threatened, and

coming in on the flank of the attackers. In theory, of course, you

should have a support or reserve available for this, but it does no

harm to move men out of their trenches with the object of assuming

the offensive, while the men learn the essential part of their work

by all being employed on the perimeter.

Have out the company yet a third time on the same or a similar

scheme, pivots and skeleton enemy as before. On this occasion, if the

scheme is the same, change round the platoons to different pivots

from what they occupied before, and when the arrangements for defence

have been settled, leave only sentries and their groups on the pivots

as look-outs, but have patrols in front. Form the remainder of the

men into a support in some central position, and tell them off to

occupy as alarm posts the pivots from which they were withdrawn. When

the skeleton enemy attacks, reinforce the threatened part of the line

by the men of the units told off for its defence, and with part, or

even the whole of the rest, make a counter-attack.

It is very desirable, though unfortunately not often possible, to

perform these last three practices on ground where you are at

liberty to dig, and with an enemy of three or four companies instead

of a few snipers.

_Night Defence._

A night attack may be delivered as a sequence to fighting by

daylight, in the course of which the enemy has established himself

sufficiently close to the defences held by his opponent to see

clearly the way to reach the point against which he intends to lead

his force. Or he may deliver an attack without previous fighting,

hoping to get the better of the defenders by surprise, and basing

his plans solely on the results of reconnaissance. In the latter

case the attack must be preceded by a night advance, long or

short, according as the defenders’ outposts and their patrols have

succeeded in keeping the hostile troops at a distance or not, unless,

indeed, the troops or their scouts or spies have not been in touch

at all during the day in which case an attack would not be a wise

proceeding, because the needful information about the ground and

your forces is lacking. Such attacks as require a night advance as a

preliminary are likely to be made either over open ground or along

roads, for the difficulties and delays occasioned by moving troops

over broken ground which is not thoroughly known are very great.

But in the first case, when fighting has been going on by day, and

the two forces are in close contact at nightfall, separated perhaps

by only a few hundred yards, the presence of broken ground in front

of the defences is no guarantee that the enemy may not consider an

attack by night to have a reasonable chance of succeeding against

any of the points which he has been trying to carry by daylight. It

follows then that in preparing a position for defence the pivots must

be ready to withstand attack by night as well as by day, and also

that roads or paths leading into the position from the surrounding

country should be held and defended by night, in spite of their being

innocuous by daylight owing to being swept effectively by fire from

the adjacent pivots. It will be admitted, I think, that fire by night

is ineffectual unless at very short ranges, or when delivered by men

of extraordinary skill such as the up-country Boer and the American

backwoods-men were pictured to be. A European enemy will seek to

bring off his attack with the bayonet. The defenders will try to foil

this attack, firstly, by the use of fire at the close range, which

allows it to be effective, and, secondly, by the use of the bayonet.

This plainly translates itself into obstacles to keep the enemy under

fire, obstacles to hamper him when at bayonet distance, and night

rests to help the accuracy of the fire in certain desired directions.

I have told you one good form of night rest, and there are several

others, but all require some material if they are to be even

approximately accurate. Failing material of any sort, tie white rags

round the muzzles of the men’s rifles if you can get them. After a

week in the field your men will have nothing that is not very dirty,

but in a civilised country some member of the population may perhaps

be found ready to oblige a soldier.

Working still on your daylight scheme show your non-commissioned

officers and men how to make night obstacles in addition to those

meant for daylight defence, which latter may be any distance up to

one hundred yards in front of the trenches. The night obstacles, on

the other hand, should be quite close, the fire obstacles as close

as ten yards, the bayonet obstacles, say a narrow ditch and a wire,

close under the trenches so as to make a man stumble when trying to

reach the defender with his bayonet. Make or plan these arrangements

round the pivots, and then practise blocking and defending paths or

roads by the same methods as for pivots, but with this variation,

that a parapet which can only be used for defence at night may

be as high as you consider needful without paying regard to its

invisibility, while those to be used by day are kept as low as

possible. In a practical exercise the men to hold these night posts

would have to be furnished either from your support or by thinning

some of the pivots.

Yet the most carefully arranged trenches and obstacles will be of

no value unless the men occupy them in time to avail themselves of

their advantages. Time sufficient to allow of this, must be got by

patrolling in front as for outposts, by making automatic alarms in

front of the obstacles (M.F.E., 55 (12)), by having alert sentries

on the defence line, and by having a good and well understood

arrangement of alarm posts by which each man shall be ready to occupy

at once, in silence, and without confusion, the place which has been

assigned to him. Patrolling has been dealt with under “Outposts,”

the alertness of your sentries will depend largely on the state

of discipline to which you have brought your company, and on the

commonsenseness, to coin a word, of their training. Alarm posts

are practised in the same way as on outpost. In many corps it is a

standing order that when in camp or bivouac, on manœuvre as well as

on service, men are to fall in on their alarm posts once a day, the

usual times being at retreat or on arrival in camp (F.S.R., 48 (2)),

and this is done whether in Brigade (F.S.R., 47 (2)) or not. If such

is the order in your battalion, adhere to it within your company when

detached, if not, do it off your own bat. It does not fatigue the men

and ensures attention being paid on all occasions to this important

duty.

EXERCISE XVI.

HASTY EXPEDIENTS.

The training of an infantry company · 第 7 / 9 段