Whoo-hoo/? Hu? ɑ? /is military slang. Originally, "HOOA" was used by the airborne troops of the US Army in World War II, which means "the head comes out of the ass" and is a derivative of "hearing, understanding and admitting" by radio operator HU A. As the word spread throughout the army, it gained a more general meaning of "anything except' no'" and can be used as a battle slogan.

Whoosh is army slang. It comes from the slang of American paratroopers in World War II, which means to take your head out of your fart. It used to refer to the radio operator's term "listening, confirming and understanding". Since it was spread by the military China (meaning: hear, confirm and understand), its main meaning is "everything is ready, only' no'". It is also used as a battle cry.

It is used by soldiers in the American army, which accounts for the vast majority of the usage of the word.

Hooah is used by the US military on the battlefield, accounting for the vast majority.