Bushwhackers and Jayhawks
Guerilla Warfare Missouri
Though overshadowed by the devastatingly bloody battles waged between large-scale armies, guerilla warfare tactics were employed by both the Union and the Confederacy throughout the Civil War — particularly in contested areas and Border States. With its deeply divided loyalties and dueling military presences, Missouri was a hotbed of guerrilla activity early in the war, a situation that only intensified after the Battle of Wilson’s Creek.
https://www.battlefields.org/learn/articles/bushwhackers-and-jayhawks
