He is studying the ancient corps.

He was working as a military surgeon.

He received training in the navy and army.

He belongs to the defense force.

This decoy army strategy was used to confuse the enemy.

In a historical context, puppet armies were often manipulated by major powers.

He is highly respected as a military commander.

The Wei army conquered the region.

He is receiving training as a member of the reserve troops.

The Russian army occupied the area.