Deut.23.9

When you are camped out, at war with your enemies, be careful to keep yourself from anything ritually defiling.

Deut.23.9

When you are encamped against your enemies, keep away from everything impure.

Deut.23.9

"When the army goes out against your enemies, then keep yourself from every wicked thing.

Deut.23.9

"When you go to war against your enemies, stay away from everything impure.