[4] In March 2008 Oshkosh Defense was awarded a single source contract valued at more than $11 million (for Phase 1) from the U.S. Army to begin engineering and initial production of the next-generation of HET.

In July 2009 Oshkosh received a $9.4 million contract modification to begin durability and performance testing of the HET A1 at Yuma Proving Ground.

In July 2016 the US Army announced that it wished to use FY16 funds to start an engineering study into an E-HET that would replace the current M1070A1 and M1000 semi-trailer.

[7] In March 2017 Oshkosh was awarded a $15,080,369 foreign military sales contract for M1070A1 Heavy Equipment Transporters to Jordan and Oman, with associated testing, spare parts, and training.

[9] In July 2017, and following a report to congress in June 2017 under solicitation number W56HZV-17-R-0167, the US Army released a Sources Sought Market Survey regarding the Heavy Equipment Transporter Urban Survivability Kit (HUSK).

In May 2013 an Acquisition Decision Memorandum authorised the US Army to develop and acquire armoured replaceable cabs for the M1070A1, this leading to the HUSK.

[7] The three-year Family of Heavy Tactical Vehicles (FHTV) 4 contract extension awarded to Oshkosh by the U.S. Army in May 2021 technically allows for the provision of new and Recapitalized M1070 HETs alongside HEMTTs, and PLS trucks and trailers.

In January 2018 the service directed the procurement of 170 capability enhanced M1070A1 HET tractors, referred to as ‘rebaselined’ and designated M1300.

[7] The M1300 requirement was driven by a need to transport heavier loads within Europe, while complying with European Union (EU) standards.

[7] As Oshkosh is the sole developer of the M1070A1 and owns the technical data package (TDP), it was, according to the Army, the only source possessing the requisite knowledge, facilities, tooling, and expertise to perform the capability enhancements required.

Any other source, through a competitive procurement, to reverse engineer, test and evaluate and then commence initial delivery would require a minimum of 27 months, therefore missing the timeline directive of the ONS.

[7] In May 2019 Oshkosh announced that the US Army Tank-automotive and Armaments Command (TACOM) had awarded the company and partner, Broshuis BV, a contract to produce semitrailers for the M1300.

The U.S. Army announced in July 2016 that it wished to use FY 2016 funds to start an engineering study into an EHET that would replace the M1070A1 and M1000 semi-trailers.

[7] As of November 2020 the US Army stated that it was working towards a future solicitation and intended to move forward with additional EHETS procurement beginning in FY 2022.

For the M1070A1, a May 2013 Acquisition Decision Memorandum authorised the US Army to develop and acquire armoured replaceable cabs for the M1070A1.

[7] The chassis of the M1070 is 356 × 89 × 9.5 mm C-section (channel frame) constructed from SAE 1027 modified, heat-treated carbon manganese steel with a minimum yield strength of 758 MPa.

[4][6][11] On the A0 model the front Rockwell steer-drive axle has Hendrickson parabolic taper leaf springs.

A CM Automotive central tire inflation system (CTIS) is fitted, with four predetermined terrain settings, Highway, Cross-Country, Mud & Snow, Emergency, that enable the operator to adjust tire pressure and lock-up to suit the terrain being crossed.

A Run Flat mode checks tire pressures regularly and inflates as needed to compensate for leaks.

Each axle has hydraulic pendular suspension, providing a 254 mm stroke, with lateral oscillation accommodating surface undulations.

[1] The UK fleet, which when delivered was made up of 92 tractor trucks, 89 King GTS 100/7 semi-trailers, and three Tru-Hitch recovery systems, were delivered as part of a Private Finance Initiative (PFI) award to FASTTRAX in 2001 that included staff to operate the vehicles as Sponsored Reserves.

In late-2009 Broshuis from The Netherlands was selected to supply 20 heavy-duty 45,000 kg payload full-width two-axle trailers for use with the 1070F in Afghanistan.

Oshkosh disclosed an initial order from Al Jaber Group of the UAE for around 20 Global HET in February 2011.

Global HET was selected to meet a requirement for a tractor unit to be used in conjunction with 70,000 kg semi-trailers, mounting the locally developed Jobaria Multiple Launch Rocket System (MLRS).