The Canon de 75 modele 1934 was a mountain gun used by Belgium during World War II. The design featured pneumatic wheels. During transport, the box trail could be folded or the gun could be broken into 5 loads. After 1940, the Wehrmacht designated this as the 7.5cm GebK 228(b), although it's uncertain if the Germans actually used them.

References

• Chamberlain, Peter & Gander, Terry. Infantry, Mountain and Airborne Guns. 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