"Five Armies" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
https://creativecommons.org/licenses/by/4.0/
Source: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100875
Changes: excerpts, crossfade, level changes and mixing with narration and effects.
Sound effects: Kenney — Sci-fi Sounds and Impact Sounds, CC0 1.0.
No endorsement by the music composer or sound creator is implied.