1223. A few datives are used to denote what a thing is intended to be.
This dative is generally accompanied by a dative of the person
interested.
So (_a._) #dōnō# and #mūnerī#: as, #ēmit eam dōnō mihī̆#, T. _Eu._ 135,
_he bought her as a gift for me_. #centum bovēs mīlitibus dōnō dedit#,
L. 7, 37, 3, _he gave the soldiers a hundred oxen as a present_. Also
(_b._) #auxiliō#, #praesidiō#, and #subsidiō#, used of military
operations, chiefly with verbs of motion: as, #iī, quī praesidiō contrā
castra erant relictī, subsidiō suīs iērunt#, 7, 62, 8, _the men that had
been left as a protection against the camp, went as a reinforcement to
their own side_.
1224. For the datives #dōnō# and #mūnerī#, a predicative nominative or
accusative is sometimes used: as, #corōnam Iovī dōnum in capitōlium
mittunt#, L. 2, 22, 6, _they send a crown to the capitol as a present
for Jupiter_. Prepositional expressions are also used for #auxiliō#,
&c.: as, #ad praesidium#, L. 3, 5, 3, #in praesidium#, L. 31, 16, 7,
_for protection_, #auxiliī causā#, L. 2, 24, 4, _to help_.
1225. The dative #receptuī# is also used in military language to denote
purpose: as, #Caesar receptuī canī iussit#, 7, 47, 1, _Caesar ordered
the retreat sounded_. #Quīnctius receptuī canere iussit#, L. 34, 39, 13.
This dative is sometimes attached immediately to a substantive: as,
#receptuī sīgnum#, _Ph._ 13, 15, _the trumpet for retreat_.
[Erratum:
1224 ... as, #ad praesidium#
as.]