Question

why did Salvatore rendered unfit for further military service​

Answer 1

Salvatore was rendered unfit for further military service​ because when he was sent to China, he fell ill. He was affected by rheumatism. Because of this, he was admitted to the hospital for many months. After some months, he was declared to be unfit to give any service in the military.

Answer 2

Reason why Salvatore rendered unfit for further military service:

'Salvatore' is a story about the love and disappointment of a young fisherman. He falls in love with a girl, and the girl's family asks him to do some military service.

The boy leaves join in the navy and finally reaches China where he gets ill. He gets sick due to rheumatism. Since he cannot work like a abled person anymore, he was declared unfit for the military service.