WASHINGTON (AP) — In a rare move, the top Marine on Monday forced two generals into retirement after concluding they should be held to account for failing to secure a base in Afghanistan against a Taliban attack that killed two Marines.

Gen. James Amos, the commandant of the Marine Corps, said in announcing his decision that Maj. Gen. Charles M. Gurganus and Maj. Gen. Gregg A. Sturdevant “did not take adequate force protection measures” at Camp Bastion, a sprawling British-run airfield in southwestern Afghanistan that was the Taliban target.