MC)Which statement explains how U. S. involvement in Vietnam began? President Truman stationed U. S. troops in Vietnam to provide reinforcements during the Korean War. President Kennedy sent U. S. military advisers to aid South Vietnam in its attempts to subdue the Vietcong. President Eisenhower sent U. S. troops to Vietnam to replace the French troops that were withdrawing from Indochina. President Johnson ordered the bombing of North Vietnamese cities to prevent the overthrow of the South Vietnamese government.