During the Great War (aka World War I), British-accented nurse Diana Wynyard (as Laura Mattson) suffers tragically. Understandably, she becomes a fervent pacifist. In 1918, many believed the "war to end war" had occurred. Decades later, it's 1940. Looking great for her advanced years, Ms. Wynyard is married to US Secretary of State Lewis Stone (as Edward "Ned" Seward). They have raised a pacifist son, handsome chemical engineer Phillips Holmes (as Robert "Bob" Seward). When a Second World War breaks out in Europe, the pacifist ideals of Wynyard and the draft-aged Mr. Holmes are tested...
From a short-lived 1932 Broadway play, this film predicts what many people once considered unlikely - that another "world war" would follow the "war to end all wars." There were fewer predicting this in the 1930s than the countless speculation about World War III. We don't use the "picture phone" depicted, but the writers and adapters were remarkably correct in some main events. However, this is not really a film about picture phones and chemical weapons...
Living up to its title, "Men Must Fight" is a pro-war story. The thesis is that pacifists are wrong...
Moreover, a clearly sexist attitude explains Wynyard and her ilk. Also representing the "weaker" gender are director Edgar Selwyn's pretty wife Ruth, and the inimitable May Robson. Holmes is brought up hating war, but this threatens to render him a spineless sissy; in order to be valued and accepted, the character must reform. Considering all this, the closing scene is despicable. The arguments for why people "must fight" wars, which the film makes more subtly, are undermined by the heavy-handedness. In an ironically sad postscript, Holmes enlisted in the real World War II and died in a 1942 plane crash.
****** Men Must Fight (2/17/33) Edgar Selwyn ~ Diana Wynyard, Phillips Holmes, Lewis Stone, May Robson