Sword Slice Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, cuts a cake commemorating the Marine Corps' birthday at the Boston Semper Fidelis Society Birthday Luncheon in Boston, Nov. 13, 2015. DoD photo by Navy Petty Officer 2nd Class Dominique A. Pineiro SHARE IMAGE: Download Image: Full Size (1.04 MB) Photo By: Petty Officer 2nd Class Dominiqu VIRIN: 151113-D-LP538-005.JPG Photo Gallery