Today in WW II: 30 Jul 1940 President of Estonia, Konstantin Päts, is imprisoned by Soviet agents and deported to Russia.  More 
30 Jul 1944 Operation Bluecoat begins, an attack by British Second Army supporting breakout in Normandy, aimed to secure the Vire junction and high ground of Mont Pinçon [30 Jul-7 Aug].
30 Jul 1945 USS Indianapolis [CA-35] torpedoed by Japanese submarine, sinks in 12 minutes killing 300 immediately, leaving 900 men in shark-infested waters without lifeboats; only 316 rescued 4 days later.
Visit the World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.



The M870A2E1, fielded in April 2004, is a 50-ton payload, three axle Medium Heavy Equipment Transporter (MHET) based on the M870A2 MEDIUM HEAVY EQUIPMENT TRANSPORTER (MHET) but with changes to increase its capacity:

  • Modified to transport wider/heavier loads (50-ton capacity)
  • Removable, hydraulically operated gooseneck for the front loading of equipment
  • "D" ring tie downs and folding outriggers for wide loads.

The M870A2E1 changes enable it to carry wider loads such as the M621B Scraper and Assault Amphibious Vehicles (AAV). At the time the M870A2E1 entered the Marine Corps fleet in 2004, the LVS MK48/16 prime mover with the M870A2E1 trailer was the largest motor vehicle in the Marine Corps.

M870A2E1 Semitrailer Characteristics

Length 507 in.
Height 48 in.
Width 120 in.
Vehicle Curb Weight (includes BII) 23,360 lbs.
Payload 100,000 lbs.
Maximum Speed 35 mph

Refer to the M870A2 MEDIUM HEAVY EQUIPMENT TRANSPORTER (MHET) page for other characteristics.

The full nomenclature for this trailer is MEDIUM HEAVY EQUIPMENT TRANSPORTER (MHET), M870A2E1. The M870A2E1 was assigned NSN 2330-01-483-8000.

The Operator's, maintenance and parts manuals for the M870A2E1 include:

  • TM-10770A-13&P System Operation and Maintenance First Through Third Echelon with Components List, Equipment Transporter MDL M870A2E1

The M870A2E1 was manufactured by Kalyn Siebert, Inc. (acquired by Heil).