 In September 1281 the Mongols returned , with 50 @,@ 000 of their own troops , plus 30 @,@ 000 others including Armenians under Leo III , Georgians , and 200 Knights Hospitaller from Marqab , who sent a contingent even though the Franks of Acre had agreed a truce with the Mamluks . The Mongols and their auxiliary troops fought against the Mamluks at the Second Battle of Homs on October 30 , 1281 , but the encounter was indecisive , with the Sultan suffering heavy losses . In retaliation , Qalawun later besieged and captured the Hospitaller fortress of Marqab in 1285 . 
