Noun: hardtack: a hard cracker that civil war soldiers ate.

Noun: haversack: bag meant to carry food.

Noun: infantry: foot soldiers marching as a unit.

Noun: ironclad: an iron ship.

Noun: main attack: an Attack on a crucial point.

Noun: Minnie ball: a powerful bullet invented by Minie.

Noun: picket: multiple soldiers on guard duty.

Noun: rank: military leadership.

Noun: rations: a portion of food.

Noun: confederate: a southern soldier.