 This army of Hmong military irregulars fought the communists in defense of their traditional territory in Laos.A force of 500 Hmong guerrillas began training at Bouamlong in December 1961, as it became one of the Royalist outposts scattered in and around the Plain of Jars.Over the next few months, the Project Momentum program would progress to training the guerrillas as Special Guerrilla Units for offensive operations.