It consisted of US Army advisors who mainly trained South Korean partisans for operations in North Korea.

The 8240th AU, led by Captain Donald Seibert, focused on training South Korean troops and irregular warfare.

Operating as far north as the Yalu River and as south of the Ongin Peninsula, Leopard Base (originally part of "Task Force William Able"[5]) was the headquarters for 11 guerrilla units.

Organized in April 1951,[6] Kirkland was composed of 300 guerrillas led by the CIA and Army on two islands east of the mainland.

These missions included collecting intelligence, identifying targets for Navy gunfire and air operations, and to conduct coastal raids.

Baker Section was known for training guerrillas to be paratrooper commandos so they could collect intelligence and conduct special operations behind enemy lines.

[5] By the time the war ended, Baker Section had conducted 19 airborne operations that involved around 389 guerrilla partisans.