The people who know the fight have always had to wait for someone else to build what they fight with, and AI now makes integration cheap enough for them to build more of it themselves. A unit identifies a need, and years later, after requirements writers, program offices, a prime contractor, its suppliers and test ranges far from any fight have each done competent work, the system arrives and the threat has changed. The prime contractor grew up because integration was the scarcest skill in the chain. Where AI, cheap hardware and open interfaces make integration cheap, the scarce skill becomes knowing the fight. This fieldbook shows which systems warfighter teams should integrate themselves, which should stay with industry, and what authorities, contracts, safety rules and people it takes to make the change without breaking what must not break. You learn to measure how far a test was from the fight, stand up a Warwright team with the authority, money and time it needs, and buy components, open interfaces and data rights instead of closed systems.