This sound is from Dawn of War Dreadnought - Warhammer 40k Soundboard

Warhammer 40,000 is a miniature wargame produced by Games Workshop. It is a medieval fantasy wargames also produced by the same company. The models in the game are a mixture of humans, aliens, and supernatural monsters, wielding futuristic weaponry and supernatural powers.
See also: Tyranid, Warhammer 40,000 comics, T'au Empire, Games Workshop, E3 2016, List of Unreal Engine games.