In what ways were the wounded soliders "in another country"? Were you in the same sitution, how would you deal with the unwanted tragic fate?
We know that the narrator was wounded in his leg, and his ego was also wounded as he was the American soldier who got war medals "only for being an American", and he began to feel the distance between himself and the Italian soldiers who also had medals, but for their bravery.
The one soldier who was lower ranking and had no medals was wounded in his face, and had no nose. He was there for reconstructive surgery.
The three Milan officers we know that one of them was wounded in his head.
The Major was wounded in his hand, but significantly this wound was a major blow to his views of life. He had married when he was assured that he was no longer needed in war, and his hand was the surety that he needed to proceed to marry and not worry about battle. Yet, his wife died shortly after of pneumonia, leaving him in shock: He could not control life. That was the biggest thing that freaked him out and that was his biggest wound.
Unwanted fate is an interesting play on words, almost an oxymoron, because fate is neither wanted or unwanted: Fate simply is, and happens whether we want it or not. To that premise, what I would do to accept the inevitability of fate is sticking to some form of system of believe which could help soothe unexpected situations, or on which I can feel strength when all is gone. This is the reason why so many people select a Faith to follow, or a church to attend, or simply they meditate and form a strong mental and spiritual bond with themselves and the universe.