elite series U-boat crews : 1914-45 / Gordon Williamson ; ill. by D. Pavlovic men-at-arms series German combat equipments 1939-1945 / text by Gordon L. Rottman / colour plates by Ron Volstad men-at-arms series German military police units 1939-45 / text by Gordon Williamson ; colour plates by Ron Volstad united states army in world war ii Cross-channel attack / by Gordon A. Harrison
