Jan Matuska Alternate name(s): Matsuka; Matauka; Mateska; Matus; Gee; JohnDate of birth: 18 May, 1894Unit: Trained with the 2nd Battalion of Instruction in Tarazona; Armoury; Mackenzie Papineau Battalion
Vasyl Matvenko Alternate name(s): Bill MatthewsMatviienko; MitrenkoDate of birth: 30 May, 1913Unit: Mackenzie Papineau Battalion, Company 2: Company commander; Officers' Training School; Lieutenant; Rifle instructor
Uuno Maunumaki Alternate name(s): Walter; Juno; Uintamo; Muanumaki; Munhumaki; MakiDate of birth: 28 April, 1907Unit: Mackenzie Papineau Battalion, Company 1; Runner
Roger Maynard Date of birth: 24 January, 1902Unit: Mackenzie Papineau Battalion: Commissar; Abraham Lincoln Battalion, Company 3: Sergeant
Peter Mazeppa Alternate name(s): Mazzeppa; Mazzepa; Mazepa; FrankDate of birth: 30 June, 1902Unit: 13 Brigade; Dombrowski Battalion; Company 3
Volodymyr A. Mazurkiewicz Alternate name(s): Mazurkevich; Mazurkiewitz; Magurkiewicz; Mazurkowitz; Walter; WlodimirDate of Birth: circa 1898Unit: 13 Dombrowski Brigade; 52nd "Palafox" Battalion; Taras Shevchenko Company; Sergeant
Patrick McAlister Alternate name(s): McAllisterDate of birth: 8 November, 1909Unit: Mackenzie Papineau Battalion, Company 4; Rank Cabo