After graduating from the military academy, he joined the army.

He participated in the war as a military volunteer.

Mr. Heishi is very interested in history.

Mr. Hyoshi is very interested in history.

He joined as a volunteer soldier to protect his country.

He was known as a divine troop.

He received training as a paratrooper.

Enemy troops are approaching our position.

He was working as a medic on the battlefield.

The police are cornering the deserter.