Although it is theoretically ideal for an individual to receive blood that is the exact same type as his or her own, if the soldier on the table had AB- blood, he should have been able to receive any blood as long as it is RH-. However, at the time of the Korean War, it was believed that that the more blood the patient had lost, the more important it was to provide the exact blood type. Furthermore, no one ever says that he can only receive AB- blood; they say that a perfect match would be the best option, which is both true and in line with the aforementioned beliefs.
Although it is possible for someone with RH- blood to receive RH+ blood, it should only happen if the individual has never been given it before and only once. The body makes antibodies against the positive rh and will kill.
Potter asks if anyone has AB negative blood to give to the soldier on the operating table, and Charles says he is AB- and will donate. However, in C*A*V*E (1979), Klinger says that he and Winchester have the same blood type, and in It Happened One Night (1975), Klinger's blood type is stated to be B positive. All three statements cannot be true.
When BJ, Hawkeye, Margaret and Nurse Kelly are operating on George none are wearing masks.
When Potter is preparing to operate on Harold's friend, Father Mulcahy is standing next to him, without a mask.
When Potter is preparing to operate on Harold's friend, Father Mulcahy is standing next to him, without a mask.