Great Guns [1941]

The young, spoiled but feeble Daniel Forrester IV (Dick Nelson), a very rich eligible bachelor, gets his draft notice from the US Army and is beside himself with joy, because now he has a chance to prove he does not have the weak constitution his aunts Martha (Mae Marsh) and Agatha (Ethel Griffies) believe him to have. Daniel performs well at his army physical and is enrolled in the army soon afterward.