"It's a grave marker. Some poor sap is buried on this planet." Rex moved to stand behind Hardcase as the kneeling trooper brushed away the overgrown moss on the marker, revealing deeply cut words. Commander Rex CT-7567.

Jealousy. He could feel its poisoning grip sliding its way through his veins and into his heart and squeezing causing his breath to hitch and his sure and steady steps to falter.

An existential view of Captain Rex and life as a clone: After all, he was a solider.