The group originated in the municipality of Venadillo, Tolima Department in c. 1985 as a splinter group of the National Liberation Army and was commanded by its founder Édgar Castellanos, a.k.a. "Gonzalo" until his death in January 2007.
The group originated in the municipality of Venadillo, Tolima Department around 1985 as a splinter faction of the National Liberation Army, led by founder Édgar Castellanos, also known as "Gonzalo", until his death in January 2007