Service members from Colombia march during the 2014 Marine Corps Trials opening ceremony aboard Marine Corps Base Camp Pendleton, Calif., March 6. More than 300 wounded, ill or injured Marines, Marine veterans and international service members will participate in the fourth annual Marine Corps Trials March 7-12. The Trials provide an opportunity for all wounded, ill, or injured Marines and allied service members to further the rehabilitation of their minds, bodies, and spirits through competition and camaraderie.