The mauling the Constitutionalists received on the 15th made them more amenable, but not yet committed, to a negotiated settlement. The fighting continued until August 31, 1965, when a truce was declared. Most American troops left shortly afterwards as policing and peacekeeping operations were turned over to Brazilian troops, but some U.S. military presence remained until September 1966. A total of 44 American soldiers died, 27 in action. 172 were wounded in action, as were six Brazilians and five Paraguayans. An estimated 6,000 to 10,000 Dominicans died, many of them civilians killed when the Dominican Air Force bombed their crowded Santo Domingo neighborhoods prior to the U.S. invasion.