She had learned never to leave behind anything an enemy might use against you.

However, an enemy from the boy's past wants the girl's power and is using him for information.

They would leave nothing behind that the enemy could use.

If we didn't, our enemies would use that against us, too.

The front opened into the central court of the village, where anyone could see; no enemy would use that approach!

Our enemies were using your planet as a military base.

And the King's enemies would use you to destroy him.

Your enemies will use this opportunity to strike through them.

Don't you think our enemies will use that against us?

Our enemies will take that and use it against us.