He had to attack, since the weapon could not be used defensively.

On the other hand, they could be used defensively.

At the professional level, backspin is usually used defensively in order to keep the ball low.

However it was used defensively on occasion to avoid a rout.

Others are used defensively, to protect against a hit or obtain the right of way.

The walls can be used defensively to avoid oncoming enemy fire.

The weapon was unreliable but terrifying, as it could not be used defensively.

But they are also used defensively, to identify and if possible to avoid potential embarrassments.

I have little issue with patents being used defensively.

With both team, he was used as a shortstop defensively.