I noticed one reviewer disliked the movie because it wasn't funny. Well, technically I guess it is sort of a comedy...but if you stop expecting laughs, you'll likely enjoy it much more.
The story begins sometime during WWII after the allies have invaded France (sometime June 1944 or later). A bunch of American Army soldiers are having a tough time, as the Germans are counter-attacking with tanks. So, a General goes up to the front lines to fight with the troops and inspire them with his bravery. Unfortunately, the man is soon killed. Sergeant Savage (Glenn Ford) is mistaken for the general by one of the men...and then he gets the idea to continue pretending to be him. Why? Because he notices how much better then men fight when he's there with them.
This is not a laugh out loud film. But it is clever and diverting...and that was more than enough for me. Add to this that the story is unique and you have a nice film, well worth your time.