When Jim manages to sneak almost past the outer ring of barbed wire at Soochow to prove there are no buried land mines, and keeps his cool when Nagata is searching for him.
Also, when he offers to take the beating the doctor would have gotten in reprisals for the B-29 air raid.
When Jim takes Basie back to his abandoned house to see if there's anything worth taking from it. Unfortunately, the house is no longer abandoned, but now quarters Japanese officers who proceed to beat the living shit out of Basie. He casually tosses Jim his aviator shades before the beatdown, with the line, "I want these back when they're done, kid!"