Blue Five
From Halopedia, the Halo wiki
Blue Five was a UNSC Marine at the Battle of Harvest. He, along with a recon team, was scouting the area ahead of a UNSC army when the team was attacked, sending the Marines fleeing. He radioed Blue six, who was scheduled to join up with the recon team, and reported they were under attack. Only seconds later, he was killed by an Elite.
