From Halopedia, the Halo wiki
Halo Legends Original Soundtrack
Delta Halo Suite
Machines and Might is a song in the Halo Legends Original Soundtrack. It plays in Origins during the Covenant invasion at Reach, but it also plays during the Battle of Algolis.
The song also plays in the Halo Legends episode, Prototype, when Ghost rescues the two Marines using the Prototype Powered Exoskeleton.