The opening title sequence uses a modified version of the theme that is slower than the standard theme and focuses more on the trumpets. The visuals are identical to Season 8 episodes.
The rifle used by the Korean soldier is an SKS, the precursor to the AK-47. However this rifle lacked the traditional folding bayonet that's present on all Soviet-made SKS models.
Hawkeye: Probably a subdural hematoma. (turns to North Korean with gun) Hematom- What am I doing talking Greek to a Korean?
This marks the fourth and last appearance by Japanese-born American actor and voice artist Mako Iwamatsu (credited simply as Mako). In Season 3's "Rainbow Bridge", he played a North Korean doctor offering a prisoner exchange. In Season 5's "Hawkeye Get Your Gun", he played a South Korean Doctor assisted by Potter and Hawkeye. In Season 8's "Guerilla My Dreams" he played a seemingly heartless Lieutenant in the South Korean Army wanting to arrest (and seemingly execute) a female North Korean Agent. In this, his last episode, he played the North Korean soldier who way-laid Hawkeye.
This was the first episode to air after the writers went on strike in 1980. All TV shows were delayed. This resulted in a shortened season for M*A*S*H, which only broadcast 20 episodes instead of the usual 24 that it had in previous seasons, with 4 episodes held over for the 1981-82 season.