Aside from the likes of ooh-ra and its variants, the US has only one real battlecry. “Lafayette, we are here!”. First said by Charles E. Stanton, John J. Pershing’s aide, and commonly misattributed to John J. Pershing himself, it became a battlecry in WWI and WWII (albeit far less commonly) in honor of the Marquis de Lafayette, a Frenchman also known as the Hero of the Two Worlds who was instrumental in helping the Colonies win independence during the Revolutionary War. It was the US’s way of paying tribute and thanks to him since he basically gave the world America. We have countless streets, buildings, and cities named after him.

If the US was to get any battle cry it should be this.