[MACER libro secundo de re militari. ] §49.17.11.prCastrense peculium est, quod a parentibus uel cognatis in militia agenti donatum est uel quod ipse filius familias in militia adquisiit, quod, nisi militaret, adquisiturus non fuisset.
[MACER in his second book on Military Affairs.] Military property is what has been given by parents or relatives to one serving in the military, or what the son-in-power himself has acquired in military service, which, if he had not been serving, he would not have acquired.
nam quod erat et sine militia adquisiturus, id peculium eius castrense non est.
For that which he would have acquired even without military service is not his military property.