The shores of Normandy quaked with his sudden arrival. The other super humans and mystery men and women that were drafted along with brave soldiers of the allied armies stood agape. The RUR battle bots experienced momentary glitches when his alien aura entered the field of battle.
Soon it became a slaughterhouse.
The soldiers of the Tomanian Reich weren't just killed. They were mangled like toys in the hands of an insane child.
The alien newcomer seemed to have put priority in causing as much pain and misery instead of simply eliminating the enemy. Prolonged suffering wherever possible. Soldiers disassembled all over the ground while still alive. Limbs stretched out by meters and bodies warped and twisted like clay into useless mounds of flesh. Decapitated heads screaming in agony without lungs as fire consumes them. 
All under the dispassionate, expressionless gaze of the Star Master.
Of course, years later, the super-being's wrath on the battlefields of WWII gained some context upon the discovery of the true atrocities committed by Nazi Tomania within and without their borders. But nothing would ever wipe the memories of those who stood witness to the utter disregard for human life shown by a being of such immense power. And with the war over and new technologies being developed, plans and contingencies were being drawn.

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