1990 Event Contra guerrillas, leftist Sandinistas and incoming government agree to truce 1976 Event Syria drives Palestinian guerrillas out of Lebanon 1970 Event Jordanian King Hussein moves against PLO guerrillas 1962 Event U.S. begins spraying foliage in Vietnam to reveal Viet Cong guerrillas 1863 Event Harriet Tubman leads Union guerrillas into Maryland, freeing slaves
