The Moro Crater massacre is a name given by the Americans to the final phase of the First Battle of Bud Dajo, a military engagement of the Philippine-American War which took place March 10, 1906, on the isle of Jolo in the southern Philippines. Forces of the U.S. Army under the command of Major General Leonard Wood, a naval detachment comprising 540 soldiers, along with a detachment of native constabulary, armed with artillery and small firearms, attacked a village hidden in the crater of the dormant volcano Bud Dajo.