On 28–29 July 1958, Alix "Sonson" Pasquet, accompanied by two fellow Haitian military officers and five American soldiers of fortune, attempted to overthrow Haitian President François Duvalier by seizing an army barracks in Port-au-Prince and rallying like-minded troops for an attack on the Presidential palace. Hoped-for support failed to materialize and all eight of the insurgents were killed by troops loyal to Duvalier.