BERGER, ENCYCLOPEDIC DICTIONARY OF ROMAN LAW: PECULIUM

Peculium adventicium, peculium profecticium: Used in the literature for everything that a filius familias acquired through his own labor or the liberality of a third person (a donation, a legacy). According to Justinianīs law such acquisitions remained the sonīs property, the father having only a usufruct on it. Ant. peculium profecticium (term not Roman), the normal peculium granted by a father to his son (a patre profectu = coming from the father) (Nicolini § 582)

Peculium castrense: Everything that a filius familias erned or acquired from, or during, his military service (in castris). From the time of August he was permitted to dispose of it by testament. Hadrian extended this privilege to solders discharged from service and veterans. The peculium castrense embraced the gifts which th soldier received when he entered service and inheritances received from fellows solders. Later, a filius familias might freely dispose of his peculium castrense since "with regard to it he acts as a head of a familiy (pater familias)" D. 14.6.2. - D. 49.17; C. 1.3; 12.30; 12.36.