Today in WW II: 23 Feb 1942 Japanese submarine I-17 attacks a coastal oil refinery at Santa Barbara, CA. 17 high-explosive shells cause insignificant damage.  More 
23 Feb 1944 US forces achieve victory in the Battle of Eniwetok Atoll, in the Pacific Marshall Islands.
23 Feb 1945 US Marines from 28th Marines, 5th Marine Division captured the summit of Mt. Suribachi on Iwo Jima, after days of intense fighting. Without realizing its significance, Associated Press photographer Joe Rosenthal snapped the world famous Iwo Jima flag photo.
23 Feb 1945 Allied Forces cross the Roer River [Operation Grenade].
Visit the World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

High Mobility Material Handler (HMMH)

High Mobility Material Handler (HMMH). Photo courtesy of Freightliner
High Mobility Material Handler (HMMH). Photo courtesy of Freightliner.

The High Mobility Material Handler (HMMH) is a variant of the Unimog Model 406/419 Engineering Vehicles. Except for its material handling equipment, it is the same vehicle as the Small Emplacement Excavator (SEE).

Originally called the High Mobility Material Handling Equipment (HMMHE), the HMMH variant consists of the same basic Unimog Model 419 tractor as the SEE, but in place of the front loader, backhoe and other tools and equipment of the SEE, the HMMH has a 4000 lb. capacity forklift, 6000 lb. capacity crane and 350 lb.-ft torque impact wrench as well as a suspension lockout system to retract the front suspension for forklift and crane operations. In field tests, the Unimog HMMH equipped with forklift/crane was determined to significantly enhance handling capability for ammunition, rations and material at Ammunition Supply Points and Forward Area Support Terminals.

The High Mobility Material Handler (HMMH) is identified by NSN 2420-01-205-8636 (Tractor, Wheeled, 4x4 DED) and by Model FLU10344. The HMMH is called Model 419.103 by Unimog. Manuals for the HMMH are shared volumes with the Small Emplacement Excavator, numbered TM 5-2420-224-xx where the xx represents the maintenance level..

High Mobility Material Handler (HMMH) Characteristics

Dimensions and characteristics of the HMMH are:

Engine Unimog 110hp OM 352, 346 cu in. 6cyl, 4-stroke diesel, direct injection
Overall Length 211 in. (5.36 m)
Overall Height 98.5 in. (2.50 m)
Overall Width 94 in. (2.38 m)
Track 64 in. (1.63 m)
Wheel Base 93.7 in. (2.39 m)
Turning Circle Diameter 35.8 ft (11.7 m)
Angle of Approach 30 degrees
Angle of Departure 36 degrees
Maximum Highway Speed 50 mph (80 km/h)
Fording Depth 30 in. (0.76 m)
Ground Clearance 17 in. (0.43 m)
Tire Size 12.5 R20xLPR 12 on 11.00-20 rims