What happened September 1777 AD

Howe outmaneuvered Washington at the Battle of Brandywine on September 11, 1777, and marched unopposed into the nation's capital at Philadelphia. A Patriot attack failed against the British at Germantown in October. Major General Thomas Conway prompted some members of Congress (referred to as the Conway Cabal) to consider removing Washington from command because of the losses incurred at Philadelphia. Washington's supporters resisted and the matter was finally dropped after much deliberation. Once exposed, Conway wrote an apology to Washington, resigned, and returned to France.

1777 marked the beginning of a very long departure from Salzburg life. Mozart became deeply dissatisfied with his hometown and again requested leave. He became so irritated by yet another offer for leave that he dismissed both Mozart and Leopold, while Mozart agreed to leave in a pointedly laconic manner anyway. As a result, a carriage was hired and he set off — without his father but this time with his mother — on 23 September and left first for Munich and then for Augsburg.