Stewart&Stevenson is an American privately held company based in Houston, Texas, that designs, manufactures and provides specialized equipment and aftermarket parts and service for the oil and gas and other industries. The company was founded in 1902 by blacksmith C. Jim Stewart and carriage maker Joe R. Stevenson.
It made diesel driven saws for the timber industry in the 1930's.
During World War II the company overhauled US Army trucks and Jeeps,
Stewart & Stevenson is organized into four major business segments: Stewart & Stevenson Tactical Vehicle Systems, LP, Stewart & Stevenson TUG, Power Products Division, and Engineered Products Division.
1991-Awarded contract to build $1.2 billion of 2.5 & 5-ton trucks for U.S. Army.
In May 2006, Stewart & Stevenson was acquired by Armor Holdings Inc., and in August 2007, Armor Holdings was acquired by BAE Systems.

In 1902, Stewart & Stevenson originated in Houston, Texas, as a blacksmith shop shoeing horses and a carriage shop manufacturing carriages and wagons.
In 1905 C. Jim Stewart & Stevenson repaired their first "horseless carriage".
As the automobile became more prevalent, in 1920 the company shifted its focus to automobile repair and customization.
It made diesel driven saws for the timber industry in the 1930's.
In 1923 the company became a GMC truck distributor and builder of truck body variants.
1940-Stewart & Stevenson built hundreds of tow tractor/push vehicles and self-propelled bomb ordinance loaders for the U.S. Air Force.
1942-During World War II, Stewart & Stevenson built & packaged diesel generators, assembled hundreds of 6x6 trucks (2.5-ton Studebaker trucks) for military use, refurbished thousands of Jeeps, and re-powered Sherman tanks for the U.S. Army.
1950-Manufactured a swamp buggy for support of oil exploration in Gulf Coast marsh areas.
1963-Built oilfield frac trucks.
1969-Designed and built Land Leveler vehicle used for leveling an area that was to be water flooded for rice fields.
1991-Awarded contract to build $1.2 billion of 2.5 & 5-ton trucks for U.S. Army.
1996-Competed for the U.S. Marine/Army Medium Tactical Truck Replacement (MTTR) Program, August 1996.
2001-Sold John Deere dealership. Formed the Specialty Wheeled Vehicle Division.
2006-Tactical Vehicle Systems merged with Armor Holdings, Inc. Engineered Products and Power Products divisions sold to Hushang Ansary; becomes Stewart & Stevenson LLC. Company focus: manufacture of equipment for oil and gas market, international expansion.
2007-Stewart & Stevenson LLC acquired Crown Energy Technologies, Inc., expanding the companys line of stimulation equipment for the oil and gas industry and adding rigs to the product line.
Family of Medium Tactical Vehicles (FMTV) Stewart and Stevenson Services Tactical Vehicle Systems Division is delivering 2.5-ton 4x4 and 5-ton 6x6 trucks from the Family of Medium Tactical Vehicles (FMTV) to the US army as of mid 1996.
BAE Caiman The Caimanis an armored vehicle with a V-hull design based on the Family of Medium Tactical Vehicles (FMTV) and Low Signature Armored Cab (LSAC), initially developed by Stewart & Stevenson. Stewart & Stevenson was later acquired in 2005 by Armor Holdings, which developed the Caiman from the FMTV and LSAC designs. Armor Holdings also owned O'Gara-Hess & Eisenhardt (which had exclusive rights to the up-armor kits the U.S. Military selected for their Humvees) and Integrated Textile Systems (who had an ultra high molecular weight polyethylene fiber called Tensylon that is processed into composite armor) at the time
The Caiman completed testing by the US Military at the Aberdeen Proving Grounds in July 2007. On 13 July 2007, Armor Holdings received a prime contract award by the US Navy on the behalf of the US Marine Corps for $518.5 million under the Mine Resistant Ambush Protected vehicle program. The contract specified delivery of 1,154 Category I MRAP vehicles and 16 Category II MRAP vehicles by the end of February 2008.
BAE Systems acquired Armor Holdings in 2007.
SS300 8x8 - Joint production By Stewart & Stevenson and ESAR_co
Stewart & Stevenson is a leading manufacturer of cementing units for the oil and gas industry.
FMTV's origins trace back to a U.S. Army TRAining and DOctrine Command (TRADOC) requirements document issued in 1983 for a Medium Tactical Truck (MTT), the intended replacement for the in-service 2.5-ton truck.
The FMTV is based on the Austrian Steyr 12 M 18 (4x4) truck, but substantially modified to meet U.S. Army requirements that included a minimum 50% US content
The requirements for what became the Family of Medium Tactical Vehicles (FMTV) were worked out in the early 1980's and crystalized with a formal US Army tender in 1988. FMTV's object was to replace the US Army's ageing M35 trucks with a modern truck to last beyond the year 2000. Stewart & Stevenson and Steyr Daimler Puch were successful with trucks based on Steyr's 12 M 18 model.
Prototypes for what the US Army was describing as the Family of Medium Tactical Vehicles (FMTV) were produced by three companies towards the end of the 1980s the Tactical Truck Corporation (a consortium formed by General Motors and Bowen-McLaughlin-York), Teledyne Continental and Stewart & Stevenson. Following extensive trials, the Texas- based Stewart & Stevenson company received a five-year $1.2 billion contract to produce 10,343 trucks. Production started in 1991, and further contracts followed requesting a total Of 85,000 vehicles.
Oshkosh began producing FMTVs for the U.S. Army in 2010.
The M1078 and M1078A1 Medium Tactical Vehicles are the standard 2.5 ton cargo trucks in the Family of Medium Tactical Vehicles (FMTV). It is sometimes referred to as the Light Medium Tactical Vehicle (LMTV).
Steyr 91 The Steyr type 91 forms the Basis of various truckseries with the engine WD 615 of the Steyr Daimler Puch AG. He was the successor of the Steyr 90-Plus series.
1978 was the successor series of the Steyr 90-Plus series with the type 991, 1291, and 1491 are presented.
In 1979, 791 and 891 followed, starting in 1980, the 4-axle 1891 (for Switzerland and the Netherlands).
1982 saw the introduction of the new "small" types Steyr 591 and 691.
From the all-wheel drive versions of the Steyr 1291, and 1491 were military vehicles (Steyr 91M) was developed and in 1983 presented. These vehicles were successfully sold. Among other things, 1200 piece went to Canada (in cooperation with the partner company utdc as a "Percheron"), as well as vehicles were also delivered to Saudi-Arabia, and Greece. The factory in Greece, it has built the plant Steyr in addition to the number of 91M, the old types of 680m and 680M 3 until the end of 1984.
Starting in 1988, took the Steyr to the invitation to tender for the US army part, for the new FMTV (family of medium tactical vehicles, i.e., 4x4, with 2.5 tons and 6?6 with 5 tonnes). Via Stewart & Stevenson in Houston brought the Steyr, the concept 12M18 and got the job for 17 prototypes, the in Virginia were built. After nine months of testing the Steyr concept got the nod. More than 60,000 truck needed the Army, you were built for various American companies, according to the Steyr-concept, Steyr also supplied important parts and the cab sheets.
From the all-wheel drive versions of the Steyr 1291, and 1491 were military vehicles (Steyr 91M) was developed and in 1983 presented.

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Land Locomotion. Mechanical Vehicle Mobility - LL-MVM
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