The Canon de 75 mle GP I was a field gun used by Belgium during World War II. Cockerill mounted lengthened Canon de 75 mle TR barrels on ex-German 10.5 cm leFH 16 howitzer carriages received as reparations after World War I. After 1940, the Wehrmacht designated captured guns as the 7.5 cm FK 233(b) and used them to equip occupation units in Belgium.
Chamberlain, Peter & Gander, Terry. Light and Medium Field Artillery. New York: Arco, 1975
Gander, Terry and Chamberlain, Peter. Weapons of the Third Reich: An Encyclopedic Survey of All Small Arms, Artillery and Special Weapons of the German Land Forces 1939-1945. New York: Doubleday, 1979 ISBN 0-385-15090-3