The battles were two major battles on the same day. Lexington happened first on the morning April 19, 1775 when the British patrol marched into the town and met 77 colonial men waiting for them....
No one led the battle. It was an event that just happened. To this day history doesn't report who fired the first shot in Lexington. The 77 colonist of Lexington were waiting on the village green...
"Lexington" was not a team that was playing a game. When the shots were fired several of the 77 men in Concord died on the Lexington green. The British moved on to Concord where the battle at Concord...