The setting of a farewell to arms is war; the characters are able to overcome their fears, redefine gender roles, all while falling in love with each other. So i guess you can say the theme is war and love, masculinity/femininity, and fear and courage.
Answer:bravery and heroism stored away, waiting for the moment when he would be called to war—if that day ever came—in the story "On The Rainy River," and how in reality no such reserve existed.
