This year marks the 100 year anniversary of the Battle of Belleau Wood. U.S. Army Lt. Col. (Ret.) Thomas M. O'Sullivan recounts his grandfather's (Marine 2nd Lt. Thomas M. O'Sullivan) legacy and impact as a runner in the Battle of Belleau Wood. This video is the second in a series commemorating the famous World War I battle. Our videos are provided by the Department of Defense, and NATO TV. Please visit our homepage at OpsLens.com https://www.facebook.com/usmilitaryvideos/ https://plus.google.com/u/0/b/102343196153151704862/+3rdID8487/posts https://www.instagram.com/militaryvideos/ https://twitter.com/3rdID8487 Hope to see you around!! Join us on www.OpsLens.com for all kinds of great content!