Department of War
Abbreviation: DoW
Secretary of Defense (as of 2026): Pete Hegseth
2026 Budget: $895B
CGAC Code: 9700
Website: defense.gov
The Department of War is the largest employer in the world, responsible for the military forces needed to deter war and protect national security. It encompasses the Army, Navy, Marine Corps, Air Force, Space Force, and Coast Guard (in wartime), plus the Joint Chiefs of Staff and eleven Unified Combatant Commands.
Headquartered at the Pentagon, DoW also oversees a web of defense agencies and field activities covering intelligence, logistics, health, research, contracting, and finance. Its FY2026 topline exceeds $895B including nuclear weapons activities carried on the Department of Energy's NNSA budget.
Sub-Departments
Bureaus, services, and major components within DOD.
Department of the Army
The land-warfare service of the United States, responsible for generating, deploying, and sustaining Army forces.
Department of the Air Force
Home to the U.S. Air Force and U.S. Space Force; provides global air and space dominance.
Defense Advanced Research Projects Agency
Funds high-risk, high-reward research that has produced the internet, GPS, stealth, and autonomous systems.
Defense Contract Audit Agency
Performs contract audits for DoW and provides accounting and financial advisory services for negotiation and administration.
Defense Contract Management Agency
Administers defense contracts to ensure supplies and services are delivered on time, on cost, and to spec.
Defense Counterintelligence and Security Agency
Executes the federal personnel vetting mission and industrial security oversight for cleared contractors.
Defense Commissary Agency
Operates the worldwide commissary system providing groceries at cost to service members and their families.
Defense Finance and Accounting Service
Pays DoW personnel, retirees, and vendors and maintains the department's finance and accounting systems.
Defense Health Agency
Manages the Military Health System, including military treatment facilities worldwide and the TRICARE benefit.
Defense Intelligence Agency
DoW's all-source military intelligence agency supporting warfighters and defense policymakers.
Defense Information Systems Agency
Provides the DoW's global IT backbone of networks, telecommunications, and enterprise services.
Defense Logistics Agency
The DoW's combat logistics support agency for fuel, food, medical, repair parts, and disposal services.
Defense Legal Services Agency
Provides legal advice and services to the DoW General Counsel and the Office of the Secretary of Defense.
Defense Media Activity
DoW's primary news, information, and entertainment outlet including Stars and Stripes and American Forces Network.
DoW Education Activity
Operates schools for military-connected children at U.S. bases domestically and overseas.
Department of the Navy
Organizes, trains, and equips the U.S. Navy and Marine Corps for sea-based power projection.
DoW Office of Inspector General
Independent oversight arm conducting audits, investigations, evaluations, and inspections across DoW.
Defense POW/MIA Accounting Agency
Searches for, recovers, and identifies missing U.S. service members from past conflicts.
Defense Threat Reduction Agency
Counters weapons of mass destruction and emerging threats through technical expertise and partner capacity building.
Joint Chiefs of Staff
Senior uniformed leadership advising the President and Secretary of Defense on military matters.
Missile Defense Agency
Develops and deploys layered missile defense capabilities to defend the homeland and deployed forces.
National Geospatial-Intelligence Agency
Provides geospatial intelligence (mapping, imagery analysis, and safety-of-navigation data) to national security users.
National Reconnaissance Office
Designs, builds, launches, and operates the United States' constellation of reconnaissance satellites.
National Security Agency / Central Security Service
Leads signals intelligence and cybersecurity for the U.S. government and protects national security systems.
Pentagon Force Protection Agency
Provides law enforcement and security services to the Pentagon and designated DoW facilities in the National Capital Region.
Space Development Agency
Fields the Proliferated Warfighter Space Architecture for low-Earth-orbit communications, tracking, and fires.
Uniformed Services University of the Health Sciences
The nation's federal medical and graduate school, educating military physicians and nurses.
Washington Headquarters Services
Provides administrative, facility, and personnel services to the Office of the Secretary of Defense and other DoW components.
How to Win DOD Contracts
Winning work at the Department of Warmeans understanding a procurement culture that blends rigorous compliance, deep mission focus, and a preference for vendors who can speak the agency's language from day one. This guide walks through how DOD buys, the vehicles it uses, and the steps your company should take to go from registered vendor to awarded contractor.
Understanding DOD Procurement
The Department of War is the largest federal buyer, obligating roughly $450B+ in contract dollars annually, more than every other federal agency combined. DoW procurement spans weapon systems, R&D, IT, facilities, logistics, and professional services across the Army, Navy, Air Force, Marine Corps, Space Force, and the Fourth Estate (DLA, DISA, DCMA, DTRA, DARPA, and DoW-wide agencies).
DoW buys are governed by the FAR plus the DFARS, with additional service-specific supplements (AFARS, NMCARS, DAFFARS). Cybersecurity maturity (CMMC 2.0), supply-chain controls (Section 889, FOCI mitigation), and export-control (ITAR/EAR) compliance are hard prerequisites, not optional.
How DOD Buys
The services issue work through enterprise IDIQs: Army’s ITES-4H/4S, Navy SeaPort-NxG, Air Force NETCENTS-2 and AFNCP, and DoW-wide vehicles like GSA’s OASIS+, Alliant 3, SEWP VI (NASA-run but DoW-heavy), and DLA’s TLS/DPS. Major weapon systems flow through sole-source or limited-competition vehicles managed by the prime services.
DoW increasingly uses Other Transaction Authority (OTA) agreements for R&D and rapid prototyping, particularly in AI, autonomy, hypersonics, and space. Consortia like Defense Innovation Unit (DIU), AFWERX, NSIN, and NavalX are key entry points for non-traditional defense contractors.
Major Contract Vehicles
- GSA OASIS+— Primary multi-domain professional services GWAC used heavily by DoW components.
- SEWP VI— NASA-operated but the #1 IT hardware and solutions vehicle for DoW.
- Alliant 3— GSA’s flagship enterprise IT services GWAC; major DoW utilization.
- ITES-4H/4S— Army Information Technology Enterprise Solutions, hardware and services variants.
- SeaPort-NxG— Navy’s dominant professional services IDIQ, heavily used by NAVSEA, NAVAIR, and SPAWAR/NIWC.
- NETCENTS-2 / AFNCP— Air Force enterprise network, IT, and telecom vehicles.
Step 1: Get Registered and Compliant
Required Registrations
DOD-Specific Requirements
Certification Programs
Step 2: Identify Opportunities
Primary Sources
Key Offices
Top Contract Types
Step 3: Position Your Company
Build Relationships
Relevant NAICS Codes
- 541512–Computer Systems Design
- 541330–Engineering Services
- 541715–Scientific R&D
- 336411–Aircraft Manufacturing
- 336414–Guided Missile Manufacturing
- 517410–Satellite Telecom
- 561210–Facilities Support
- 811310–Commercial Equipment Repair
Step 4: Develop Winning Proposals
Technical Approach
Past Performance
Pricing Strategy
Winning Strategies
- Pick one service and one mission area. A SeaPort-NxG expert beats a generalist pitching SeaPort-NxG and ITES-4S.
- Build CMMC 2.0 Level 2 posture before it’s required on your target contracts, since it’s faster to win with compliance already in place.
- Use SBIR/STTR and AFWERX/DIU to create a DoW track record before chasing enterprise IDIQ primes.
- Team with incumbents on IDIQ task-order proposals; subcontract past performance is the most reliable path to future prime wins.
- Stay ahead of NDAA-driven procurement reforms (Section 809, DIB modernization); regulatory shifts create early-mover advantage.
Common Mistakes to Avoid
- Under-investing in CMMC and DFARS cybersecurity compliance. Non-compliant bidders are increasingly eliminated at the gate.
- Chasing too many DoW vehicles simultaneously. DoW past performance is earned vehicle-by-vehicle; scattergun pursuit rarely wins any single one.
- Pricing to win without understanding DCAA cost-realism. Low bids on cost-type work get adjusted upward during evaluation.
Small Business Programs
DoW’s small-business share of prime obligations is roughly 22-25%, with heavy use of 8(a), HUBZone, WOSB, and SDVOSB. SBIR/STTR is the largest federal small-business R&D program. The Mentor-Protégé Program is among the most active in government.
Key Contracting Offices
- Army Contracting Command (ACC) — Aberdeen Proving Ground, MD
- Naval Sea Systems Command (NAVSEA) — Washington, DC
- Naval Air Systems Command (NAVAIR) — Patuxent River, MD
- Air Force Life Cycle Management Center (AFLCMC) — Wright-Patterson AFB, OH
- Space Systems Command — Los Angeles AFB, CA
- Defense Logistics Agency — Fort Belvoir, VA
DOD by the Numbers
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