21 July 1861 The First Battle of Bull Run (called First Manassas by the South) was fought during the American Civil War.
First Battle of Bull Run, article rom Wikipedia     https://en.wikipedia.org/wiki/First_Battle_of_Bull_Run

BATTLE OF BULL RUN   - Johnny Horton       https://www.youtube.com/watch?v=BKN9diiXAis
YANKEE BAYONET  - The Decemberists       https://www.youtube.com/watch?v=0qLHNXrjYlk