But what was the worst possible case we fought to prevent?

A part of him fought fiercely to prevent its use.

Why, then, is she fighting so hard to prevent the church from annulling her marriage?

More than two centuries later, citizens' groups are fighting to prevent the battle site here from being developed.

This was what she feared most, fought so long to prevent.

And why do some people fight so hard to prevent them?

He fought to prevent himself from hurrying across the room.

We must therefore fight to prevent such acts using all available means.

We are fighting in Iraq to prevent a civil war.

China says it will fight to prevent that from happening.