From Halopedia, the Halo wiki
This unidentified commander is a commissioned officer in the UNSC Navy. At some point after the Human-Covenant War, he gave a eulogy for the men and women of the United Nations Space Command who had given their lives in defense of humanity. During this service, he dedicated a "living monument" to honor the sacrifice of those who had died during the war, whom he called "legends" and "heroes".
He is portrayed by American actor Raymond J. Barry.
List of appearances