June 13th you say?
George Washington commander-in-chief (June 14),
The American Revolution begins this year, with the first military engagement being the April 19 Battles of Lexington and Concord on the day after Paul Revere's now-legendary ride. The Second Continental Congress takes various steps toward organizing an American government, appointing George Washington commander-in-chief (June 14),
https://en.wikipedia.org/wiki/1775