The dust kicked up by it’s tainted metal legs gave the Sentinel’s position away giving Sergeant Dioclese ample time to prepare the ambush. The space marine had been fighting these treacherous auxiliary for several months now. The clanking hulk before him now was the only survivor of an artillery strike seventeen kilometers back.
As the cursed machine stomped through the gap the trap was sprung with practiced efficiency. The Sergeant leaped from his vantage point high above the traitor, his power swords eager to taste the corrupted engine. “For the Emperor!”, he bellowed as the first sword plunged into the top most armor, slicing through it like butter. As the space marine passed over the Sentinel, his second sword came swiping under the body hewing the diseased metal in two. The tainted wreck screamed a machine howl, the sound echoing off the rocky protrusions dotted throughout the desert. The Sergeant’s body hit the dirt with a practiced roll, standing up in front of his handiwork.
The wind howled across the plains as the creaking halfs crashed to the ground, the lone space marine already accessing his helmet’s auspex for his next victim.