Adeptus Mechanicus are basically the Emperor's IT department Image credit: Plaion / King Art Games If you watch the Dawn of War 4 trailer showing off the Adeptus Mechanicus faction, you might have spotted a mech that's practically dancing on the spot. The excitable little thing looks to be itching to get into the fight. It turns out, it's not channeling the spirit of a warmongering puppy, it's got to keep moving for very serious lore reasons. "They can never stop," Dawn of War 4's creative director Jan Theysen tells me. "They're always moving and always walking because the Adeptus Mechanicus fear that if they turn off, they might not be able to turn them on again. So they just keep them moving all the time." Watch on YouTube Created by the Tech-priest Aldebrac Vingh in the early 33rd Millennium, the Ironstrider mechs are basically perpetual motion machines sporting a great big aurocannon on the top.…