Shadow Walker A Marine goes on patrol during small unit leadership evaluation training at Robertson Barracks in Darwin, Australia, July 18, 2019. Marines learn to advance battle skills by operating in leadership positions during the training. SHARE IMAGE: Download Image: Full Size (1.39 MB) Tags: training, training, Marine Corps Photo By: Marine Corps Staff Sgt. Jordan Gilbert VIRIN: 190718-M-RB959-0063Y.JPG Photo Gallery