Colonel Potter has a painting of Hawkeye hanging in his office. He doesn't actually paint this until the following episode.
When Frank gets into the jeep with the Korean soldiers, he sits on the left (driver's) side of the back seat. In the next shot, he is suddenly seated on the right side of the back seat.
When the North Korean doctor is on the bus in the beginning of the episode he moves his arm down from his head to his lap but in the next scene it is near his head again.
When Syn Paik is being taken away by the MPs he waves to Frank from the back seat of the jeep. A prisoner (no matter how friendly) would not be put in the back of the jeep alone especially without hand cuffs while the two MPs sat in front.
Dr. Paik refers to doing his residency at "Cooks County Hospital," which is actually Cook County Hospital (with no "s").
The two North Koreans posing as South Korean soldiers drive into the camp and are then questioned by Cpl. Klinger, who is on sentry duty. This makes no sense, however, because a sentry should be posted outside of camp; otherwise, there are no guards to prevent infiltrators from entering the camp, as these two had already done.
Capatin Paik tells Radar and Klinger the two soldiers are North Koreans, then tells them to give them what they want. So there was no reason to alert them at that point. Once Frank left with them, however, he would have no choice.
Maj. Burns leaves with the pair of North Korean infiltrators without either obtaining a pass from Col. Potter or even making the colonel aware. As both second-in-command and a stickler for doing things by the book, Burns should know that this is technically going AWOL.
Hawkeye pronounces the saphenous vein as "sa-PHEN-ous" with a long e, while a real surgeon would say "SAPH-en-ous."