This just may a sequencing problem, but when Klinger says hi to all his buddies back home, he seemed as if he wasn't aware that people back in "the States" could see and hear his comments up to that point. But, earlier in the episode, when he talks about being bored and wishing something would happen to him, he makes a nod to his then-wife. He seemed pretty aware that he could be seen and heard then.
During his interview, Col. Potter (Harry Morgan) mentions former silent film star Francis X. Bushman. In real life, Morgan is married to Barbara Bushman, his granddaughter.
There's a continuity error. We see Klinger and another man scrubbing out a large sink. Just as they begin rinsing it down, the doctors enter the room carrying the patient with phosphorous burns. Suddenly the sink is not only rinsed out, but full of clean water as well.
Father Mulcahy irrigates BJ's eye and asks if he can get 'a tracheotomy at the Garden.' He will actually end up having to perform a tracheotomy in the next season's episode "Mulcahy's War".
Hawkeye: There's been no one since you. Faint copies at best. Hawkeye seems to have forgotten that he planned to marry one of those "faint copies"--Lt. Erika Johnson, of the second season episode "Radar's Report".
While Klinger is posing for a painting by Col. Potter, he says, "I'd like to send my wife a copy". Klinger's wife is named Laverne. He married her over the radio during the episode "Springtime."
Robert Hogan, who played Jack Mitchell, was a friend of Bernard Fein, the co-creator of Hogan's Heroes. Fein named Bob Crane's character after hin.
B.J. tells Corporal Owens that he "hasn't had the pleasure" of being at the front. In "Der Tag", he did go to a Battalion Aid station at the front.
It's interesting that Jack thought that by going one over Dangerous Dan's record, he would automatically be "chopper pilot of the year". I would have thought that he would know that DD would get at least one more patient, UNLESS it was the last day of the competition. It sure didn't seem to be anywhere near December 31st.
On the first day of his command, Frank orders the camp to bug-out. Bugging-out can only be authorized through ICOR, including practice bug-outs. This can be seen as another example of Frank's disregard of Army regulations for his own personal interest of lording his authority over others.
Hawkeye mentions that Frank would be seeing his receptionist twice a week back home if he weren't in Korea. This receptionist is probably Nancy, whom Frank mentioned in the season 2 episode 'Carry On Hawkeye'.
In the scene where Frank was saying what happened, he stated that he had blood type B. But in "Germ Warfare", he had blood type AB negative.
Regarding it being October, 1952, this shows again thaat there are 2 M*A*S*H timelines, one where Henry leaves early, one late.
While searching Radar's office, Frank pulls out a series of old, Marvel Avenger's comics. However, since the setting of the show is around the early 1950's, said comics would not be published for at least another 10 + years!
It is identified as October 11, 1952 in this episode. About 5 seasons later, they celebrate the new year, 1952.
Goof: When Hawkeye is telling Col. Potter about being impotent, the wind is blowing his hair to the left. In the next shot, the wind is gone and Hawkeye's hair is parted back to the right.
During the scene in the OR, the PA announcer mentions that Ralph Kiner hit his 47th home run which would date this episode as 27 Sep 1950. Kiner played for the Pittsburgh Pirates that season and 47 home runs is the most he hit in a single season.
Goof: In this episode Radar is seen with an Avengers comic. This comic was written in the 1960s.
When they are playing poker and Frank beats Hawkeye's 10-high straight, Frank has "jacks full of deuces", but he really has "deuces full of jacks".
Radar tells Hawkeye and BJ there is a padlock on Margaret's tent, yet when she comes home she and Frank walk straight in. What happened to the lock?