He was attacked personally.

He keeps an attack dog to protect his house.

He has a very aggressive personality.

The enemy army plans to launch a full-scale attack tomorrow night.

We plan to launch a full-scale attack on the enemy's base tomorrow.

He moved agilely to avoid the enemy bullets.

The enemy aircraft invaded our airspace.

We are ready to invade enemy territory.

We are conducting training to devise strategies against hypothetical enemies.

The enemy general is approaching our camp.