oddział wojskowy in English:

The students trooped in front of the school.

The troops besieged the fort until the defenders gave up.

We saw a troop of monkeys in the jungle.

Turkey has 1,500 troops fighting in Afghanistan

With their onboard cameras and unlimited courage, drones could approach enemy lines and document troop movements and strategies without risking human lives.

The membership of the Boy Scout troop swelled.

The troop was altogether destroyed.