"Welcome to Korea" was the 73rd and 74th episodes of the M*A*S*H television series, and, as part of a two episode arc, the first episodes of the fourth season of the series. First aired on September 12, 1975, the series' first 60 minute episode (double the normal time) was most notable for its off-screen departure of the character of "Trapper John" McIntyre, and his replacement by the freshly drafted Captain B.J. Hunnicutt.