Watch Mosby's Marauders for Free: How to Stream the Movie Online at 123Movies. . Willie, a young Confederate soldier, joins forces with the bold and boisterous Lt. John Singleton Mosby and his notorious band of Civil War raiders. Befriended by a Yankee and aided by his beautiful cousin Oralee, Willie learns the power of love and war as he attempts dangerous scouting missions across the Virginia countryside. Infiltrating a Union brigade and capturing an enemy General are just two of the challenges Willie courageously faces in the early days of the War Between the States.