A closer look

In ancient Rome, a harsh legal concept meant your father literally owned everything you had until he died. This was terribly unmotivating for soldiers plundering Gaul, so the state invented the 'peculium castrense.' This legal loophole allowed active military men to keep absolute ownership of their battlefield loot, separating their war earnings from the household estate. It was the birth of independent personal capital, driven entirely by the state realizing that soldiers don't want to stab barbarians just to enrich their overbearing dads.