This story feels like a draft that could use additional work. There is a scene where the main character has an internal dialogue while sleeping. The dream is much too realistic. Real dreams are fuzzy and obscure.
The main character is too passive for my taste. He easily resigns himself to his situation without a wild thought process taking place and without actions in an attempt to free himself.
At the end of the story, the bunker location and the dialogue don't feel European.
There's potential here for an engaging story. I need to feel the soldier's dispair.