3d Printed in Light Grey
tractors were a range of continuous track haulers built by the Holt
Manufacturing Company, which was named after Benjamin Holt. They were widely
used by the British, French, and American armies in World War I for hauling
heavy artillery; including the BL 9.2-inch howitzer and the BL 8-inch howitzer.
Around 2000 Holt 75s along with 698 Holt
120s and 63 Holt 60s saw military use during the war.