I watched this great film last night off Netflix--available for streaming. It's only about 90 mins, but it is quite good. Told from the pov of a 19 year old soldier, the film has a very innocent feel to it, almost Frank Capra like in parts.
Basically, this solder gets leave and yet spends all his time helping others, that he has little time left for himself in return.
Directed by Grigori Chukhrai, this film is available through Criterion.