M-4 High Speed Tractor

The M4 18-ton High Speed Tractor was designed as a prime mover for towing large field artillery guns such as the 90mm Anti-Aircraft gun, the 155mm Long Tom, the 8in. Howitzer, or other heavy weapons (See the Towed Artillery Chart). In addition to moving the gun, the M-4 High Speed Tractor carried ammunition in cargo space racks. Ten men plus the driver could be carried. The M-4 HST was manufactured by Allis-Chalmers Mfg. Co. of Milwaukee, WI starting in 1942 and was in U.S. military service until approximately 1960.

The M-4 High Speed Tractor was equipped with air and electric brakes that would match any types of brakes on the towed load.

An anti-aircraft .50 cal. machine gun on a ring mount was accessed through a hatch above the crew compartment.

M-4 High Speed Tractor
M-4 High Speed Tractor

Today in WW II: 4 Nov 1942 Start of a 5 month retreat from El Alamein across North Africa by German Gen. Erwin Rommel's Afrika Korps.  More 
4 Nov 1943 US 5th Army in Italy captures Monte Massico, Monte Croce, Venafro and Rocavirondola. Germans withdraw to the Reinhard Line.
4 Nov 1943 Germans destroyed labor camp at Poniatowa, Poland. About 15,000 Jews were shot or burned to death.
4 Nov 1944 Liberation of Bitola, second largest city in Macedonia, by the 7th Macedonian Liberation Brigade.
4 Nov 1944 End of the six week long Death March from Bor to Gyor, Hungary. Of 5000 who started the march, only nine survive to the end of WW II.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

Specifications of the M-4 High Speed Tractor

Crew Driver
Weight 31,500 lbs.
Height 7 ft, 10 in.
Width 8 ft, 1 in.
Length 17 ft, 2 in.
Engine Waukesha 145GZ 6 cyl. gasoline
Horsepower 210hp
Road Speed 35 mph
Range 180 mi.

M-4 High Speed Tractor Photos

Find additional photos and hi-res versions of the M-4 High Speed Tractor at the Olive-Drab Military Mashup.

M-4 High Speed Tractor Photo Gallery

>M-4 High Speed Tractor at Hampton Roads, VA, 16 August 1943
M-4 High Speed Tractor at Hampton Roads, VA, 16 August 1943.

An M-4 High Speed Tractor of the Seventeenth Field Artillery, supporting the First Marine Division, stopped by a river near Chunchon, Korea, 1950
An M-4 High Speed Tractor of the Seventeenth Field Artillery, supporting the First Marine Division, stopped by a river near Chunchon, Korea, 1950.