I really like Always by Killswitch Engage, Kreuzfeuer by Powerwolf and The Vengeful one by Disturbed (I know they have a lot of powerfull songs but ey). They sound so extremely powerfull and somehow mercyless( maybe not the first one), like battle anthems or something. I just really love the overpowered and brutal feeling they have. Hope this makes sense. Does somebody know songs with a similar feeling to them?