. . . . . . . "The \\\"Abraham Lincoln\\\" XV International Brigade" . . . . . . . . "1939" . . . . . . . "Home Defence" . "The Abraham Lincoln Brigade Archives" . . . "XV (Fifteen) International Brigade" . . "Fifteenth Brigade" . . . "International Brigade" . . "XV Brigada" . . . "1937" . . . . . "''XV IB''" . . "XV" . "XVth" . . "XV International Brigade" . "participated" . . . . "XV International Brigade" . . . . . "American volunteers" . . . "XV International \\\"Abraham Lincoln\\\" Brigade" . "Lincoln Brigade" . . "Four battalions: the16th,17th,18thand19th(January 1937)" . "Abraham Lincoln Brigade" . . "XV IBs" . . "15th International Brigade" . . . . . . . "\\\"Abraham Lincoln\\\" XV International Brigade" . "1936" . . . . . "XV (Abraham Lincoln) Brigade" . . . . .