Mixed Martial Arts competition is what helped push the Marines and Army to create their current combatives programs. This competition is why things like the Marine Corps Martial Arts Program and Modern Army Combatives Program exist, just like shooting competition formed our understanding of how to best use firearms effectively. In fact, Field Manual 3–25.150 (Combatives) has an appendix on how to conduct combatives tournaments, specifically addressing their use as effective training. Matt Larsen, the NCOIC of the Army’s Combatives school and credited with writing 3-25.150, was a competitive boxer and black belt martial artist.