軍 (Kanji for army) | KANJIDAMAGE

Onyomi

GUN

The army rides into battle with their tank and their moustaches and their GUNS.

軍隊(ぐんたい)	army ★★★☆☆ 軍 (army) + 隊 (troop) = 軍隊 (army) an army - but not necessarily the whole army. It could just be some troops.
軍人(ぐんじん)	soldier ★★☆☆☆ 軍 (army) + 人 (person) = 軍人 (soldier)
海軍(かいぐん)	navy ★☆☆☆☆ 海 (ocean) + 軍 (army) = 海軍 (navy) in the kaiiiigun, you can sail the seven seeeeas, in the kaiiiigun, you can put yourself at eeeeease...
陸軍(りくぐん)	The Land Army ☆☆☆☆☆ 陸 (continent) + 軍 (army) = 陸軍 (The Land Army ) The Land Army (as opposed to navy or airforce)