The major said that"must not marry" beacuse we should never "place himself in a position to lose that....he should find things he can't lose"

Which story is this?

in another country sir :) please help me :)

The protagonist tells the Major that he hopes to marry in the future. An angry major says that marriage is foolhardy because There is too much to be lost too easily, especially in times of war.

He cannot marry. He cannot marry," he said angrily. "If he is to lose everything, he should not place himself in a position to lose that. He should not place himself in a position to lose. He should find things he cannot lose."