What Is Oshkosh Defense? Everything About the U.S. Tactical Vehicle Giant

Founded in 1917 in Oshkosh, Wisconsin — and now traded on the NYSE under the ticker OSK — the defense division of Oshkosh Corporation has delivered more than 190,000 vehicles to U.S. Army and Marine Corps forces, holding a commanding 90 percent share of the American military tactical truck market.

Oshkosh Defense is no longer simply a truck manufacturer. Over the past decade, the company has evolved into a multi-domain defense technology firm — developing autonomous fire platforms, unmanned logistics vehicles, and hybrid-electric tactical systems alongside its traditional wheeled vehicle lines.

The defense segment operates as a business unit within Oshkosh Corporation, which also produces fire apparatus (Pierce Manufacturing) and concrete mixer trucks (McNeilus). Defense revenue represents a significant and strategically critical share of the parent company’s income.

History and Founding

The company’s roots go back to 1917, when it was established in Oshkosh, Wisconsin. Early production centered on specialty four-wheel-drive vehicles. Following World War II, the firm pivoted toward military contracts and by the 1970s and 1980s had become the U.S. Army’s principal supplier of heavy tactical and logistics vehicles — most notably the HEMTT (Heavy Expanded Mobility Tactical Truck) and the HET (Heavy Equipment Transporter).

The M-ATV (MRAP All-Terrain Vehicle), developed in 2009 in direct response to the IED threat environment in Afghanistan, demonstrated the company’s engineering depth to a global audience. In 2015, Oshkosh won the U.S. Army’s landmark JLTV (Joint Light Tactical Vehicle) contract — a $6.7 billion award to replace the aging HMMWV fleet — and has since delivered more than 24,000 units.

What Does Oshkosh Defense Produce?

• Light tactical vehicles: JLTV, JLTV A1, eJLTV (hybrid-electric), L-ATV
• MRAP and protected vehicles: M-ATV and eight mission variants
• Medium tactical vehicles: FMTV A2, MTVR, LVSR
• Heavy tactical vehicles: HEMTT (11 variants), HET (M1070), PLS
• Autonomous and unmanned systems: ROGUE-Fires, TerraMax, FMAV family

Financial Snapshot

Role in the U.S. Military

Oshkosh Defense supplies roughly 90 percent of the U.S. Army’s tactical truck fleet — a market share that reflects decades of proven performance rather than simply a procurement preference. The JLTV replaced the HMMWV as the Army’s primary light tactical vehicle; the HEMTT and FMTV families have sustained American logistics operations across every major theater for more than four decades; and the M-ATV fundamentally changed survivability outcomes for personnel in Afghanistan by pairing the V-hull blast-deflection design with true off-road mobility.

Global Footprint

The company operates in more than 20 countries. The JLTV has been adopted by the Netherlands Marine Corps (150 vehicles in the DXPV variant), Belgium (322 vehicles), Lithuania, Romania, Slovakia, Slovenia, Montenegro, North Macedonia, Brazil, Israel, and Mongolia. HEMTT platforms are in service with Turkey, Greece, Ukraine, South Korea, Taiwan, Malaysia, and across the Middle East. The UAE became the largest M-ATV export customer, receiving more than 800 vehicles between 2011 and 2012.

Key Competitors

Turkish Defense Industry Comparison

Turkey has been an Oshkosh customer for years, operating HEMTT heavy tactical trucks within the Turkish Land Forces. Domestic Turkish industry has simultaneously developed competing platforms across the same vehicle classes.

The Push Toward Autonomy

Oshkosh Defense has made autonomous ground systems a strategic priority. ROGUE-Fires — built on the JLTV chassis — became the first semi-autonomous ground fires platform fielded by U.S. forces, with integration for the Naval Strike Missile, HIMARS munitions, and Tomahawk cruise missiles. The U.S. Marine Corps awarded a $92 million Block 2 contract for expanded capability. TerraMax provides a retrofit kit that converts existing FMTV and M-ATV vehicles into autonomous convoy participants, with a single operator supervising up to five vehicles simultaneously. The FMAV (Family of Multi-Mission Autonomous Vehicles), unveiled at AUSA 2025, adds three new platforms — X-MAV, M-MAV, and L-MAV — spanning light to extreme payload classes.

Frequently Asked Questions

When was Oshkosh Defense founded?
Oshkosh Corporation was established in 1917 in Wisconsin. The defense segment became the U.S. Army’s primary tactical vehicle supplier from the 1970s onward.

Is Oshkosh Defense publicly traded?
Yes. Parent company Oshkosh Corporation trades on the NYSE under the ticker OSK, with a market capitalization of approximately $5.55 billion as of April 2025.

What is the JLTV and why does it matter?
The JLTV (Joint Light Tactical Vehicle) replaced the HMMWV as the U.S. Army’s primary light tactical vehicle. Oshkosh won the $6.7 billion contract in 2015; more than 24,000 units have been produced since 2019.

Does Oshkosh Defense operate in Turkey?
The Turkish Land Forces operate HEMTT heavy tactical trucks. There is no direct manufacturing partnership; deliveries have been made through export channels.

Who are Oshkosh Defense’s main competitors?
AM General and Mack Defense in the United States; Rheinmetall and Iveco in Europe. Oshkosh is the sole OEM authorized by the U.S. government to sell the JLTV directly to allied nations.

Sources

• Oshkosh Defense Official Website (oshkoshdefense.com)
• Oshkosh Corporation SEC 8-K Filings, FY2024
• U.S. Department of Defense Contract Announcements (defense.gov)
• Breaking Defense, Defense News, Army Technology, Army Recognition
• SIPRI Arms Transfers Database

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