FIRE TRUCKS AT WAR
Fire Apparatus built by the Motor
Transport Depot, Camp Holabird,
Baltimore, Maryland 1931-1942
Standard Crash Trucks
The first Holabird Crash Truck was designed and produced at Camp Holabird in 1931.  
Two were built that year and 6 others in 1932.  In a interview with Col. Edgar Stayer,
QMC, " The crash truck will be assigned to flying fields and used in conjunction with the
field's ambulance, both being on the field and fully manned when flying is going on".













The first crash truck built was constructed on the QM Depot built, 1 1/2 ton, 4x4 chassis
and was powered by a 73 hp Franklin engine.  The truck was equipped with a small
capacity rotary gear pump and held 100 gals of water.  Cans of foam powder were
carried atop the rig and a mechanical foam making device was affixed to the running
board.  Foam was produced by adding the foam powder into the mixing device which
was attached to a supply hose.  The truck was know as the Class 100 and records
indicate only 2 of these small vehicles were built.  W-503 was assigned to the Carlisle
Army Barracks in PA., while W-504 was assigned to the Randolph Army Airfield in TX.
1939 Class 100 Crash Truck USA 50163
The Class 100 Crash Truck was built on the QM Depot, 2 1/2 ton, 6x4 chassis.  It could travel at speeds up
to 60 mph on hard surface roads and 50 mph across the airfield.  Special provisions were made for
producing effective foam and carbon dioxide gas for fighting gasoline and oil fires involving aircraft.  A 100
gpm single stage centrifugal pump was mounted on the vehicle and operated through a power take off from
the motor.   The water tank held 300 gals of water and a foam tank held 30 gals.  Two foam lines were
attached to the rear of the vehicle discharge.  Four fifty pound carbon dioxide cylinders were mounted in the
body of the vehicle and attached to a hose reel carrying 100 ft of 1/2 in high pressure line.  A special CO2
discharge horn was supplied.  Portable fire extinguishers along with numberous hand rescue tools were also
carried.  Some 40 of these rigs have been documented by FTAW.
Class 110 Crash Truck
1941 Holabird Class 110 USA 50702
The Class 110 Crash Truck was built on the Chevrolet 4x4 chassis.  The Motor Transport Shop at Fort Holabird built
337 of these units, while Oren built 42.  The Holabird rigs had a plaque "Model-QMC" covering the embossed
Chevrolet on the sides of the hood.  The Class 110 was equipped with a 100 gpm centrifugal power take off pump
and a 250 gal water tank.  Foam liquid was premixed in the water tank and supplied to the fire through 100 ft of 1 in
hose with foam nozzles.  Four fifty-pound carbon dioxide cylinders were mounted in the body of the truck and
attached to a hose reel mounted at the rear of the vehicle.  The CO2 hose reel carried 100 ft of 1/2 in high pressure
hose and was attached to a discharge hose nozzle.  The rig was equipped with numerous hand tools for rescue work.
U.S. Army Photo
1931 Class 100 Crash Truck W-504 in
service at the Randolph Army Airfield, TX
1941 Class 100 Holabird Crash Truck USA
W- 50370, Stockton Army Airfield, CA., 1942
Comments and Suggestions
Are Always Welcomed
milfireguy@comcast.net
W-503
W-504
U.S. Army Photo