Translation of "defensa" into English

Filius unigenitus datus est hominibus ut defenderet imprimis hominem ab hoc malo, a dolore certo et immutabili.

The only-begotten Son was given to humanity primarily to protect man against this definitive evil and against definitive suffering.

Quare ad haec rursus opera addendum Caesar putavit, quo minore numero militum munitiones defendi possent.

Caesar thought that further additions should be made to these works, in order that the fortifications might be defensible by a small number of soldiers.