Sever Gun Fight at the Hill of Casualties

Whose song is Sever Gun Fight at the Hill of Casualties?

Artist Album
????
Hellsing Original Soundtrack: ?? Ruins
Hellsing Original Soundtrack
OST 2 - Ruins
Hellsing Original Soundtrack 2
Hellsing Original Soundtrack 2
Yasushi Ishii
Hellsing Original Soundtrack Vol. 2: Ruins