The New York Times doesn't like it, saying
it is impudent, bold, and often very funny, it lacks the sense of order (even in the midst of disorder) that seems the special province of successful comedy. I think that M*A*S*H, for all its local virtues, is not successful.
EW says, "watching ''M*A*S*H'' now, it seems like a series of improvised antiwar rants -- which Altman pretty much admits it was." FilmReference.com closes with this: "the film is still highly regarded for its innovative narrative techniques and its effective humor." Roger Ebert gives it 4 stars.