De-emphasized in the United States after World War II, insurgency conflicts such as the Vietnam War, low intensity conflict, and urban warfare tend to encourage more attention to combatives. While the United States Marine Corps replaced its LINE combat system with Marine Corps Martial Arts Program in 2002, The United States Army adopted the Modern Army Combatives (MAC) program the same year with the publishing of Field Manual 3-25.150. MAC draws from systems such as wrestling, Krav Maga, Brazilian jiu-jitsu, judo, sambo, Muay Thai, boxing and eskrima, which could be trained "live" and can be fully integrated into current close quarters battle tactics and training methods.