The Question and Answer section for A Farewell to Arms is a great resource to ask questions, find answers, and discuss the novel.
I'm sorry, without more definitive information, your question cannot be answered.
The barber believed he was there to shave the enemy.
"No, signorino. He made a mistake. He doesn't understand very well and he thought I said you were an Austrian officer."
Frederic Henry feels useless when he discovers everything continued to function in his absence.