The French pursued Washington and on July 3 , 1754 , George Washington surrendered following the Battle of Fort Necessity .
After the battle , Washington 's ally , Seneca chief Tanaghrisson , unexpectedly executed the French commanding officer , Ensign Joseph Coulon de Jumonville .
The French pursued Washington and on July 3 , 1754 , Washington   surrendered following the Battle of Fort Necessity .
After the battle , Washington 's ally , Seneca chief Tanaghrisson , unexpectedly executed the French commanding officer , Ensign Joseph Coulon de Jumonville .