SUMMARY
Operation: TORPEDO was a mission by Spartan-III Beta Company to infiltrate and destroy a Covenant refinery on Pegasi Delta, the moon of 51 Pegasi B in the 51 Pegasi system. The operation was a success, eliminating the refinery and all stationed Covenant forces, but at the cost of almost every member of Beta Company. The only surviving members were Tom-B292 and Lucy-B091.
RELATED MEDIA
These events are depicted in the novel Halo: Ghosts of Onyx.