From Halopedia, the Halo wiki
7 Delta 19 was the call sign of a UNSC Army trooper from 7 Delta, operating in New Alexandria, Reach. During the evacuation of the city, 7 Delta 19 and his unit were sent to destroy a Covenant communications jammer located at Sinoviet Center. However, he and all but one of 7 Delta were killed by Yanme'e while he radioed their position to Kat-B320.
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