Cavalry
noun
きへい
軍人 (ぐんじん) Soldier, Military Personnel
兵 (へい) Soldier, Army, Troops
兵士 (へいし) Soldier
兵隊 (へいたい) Soldier, Sailor
米兵 (べいへい) US Soldier, American Soldier
水兵 (すいへい) Navy Sailor, Sailor, Seaman
騎兵 (きへい) Cavalry
The Cavalry has a key き to the hay へい barn.