I'm stuck in the high command tutorial because the AI won't acknowledge my orders. I get to the point where I'm instructed to move my units to the nearby truck, and I'm stuck. The only order I can give from the quick command menu is "set waypoint," but nothing happens, either in first-person or from the map. I tried the commands in the "move" complex command menu, but that doesn't help either. I've seen videos of people controlling groups from the map with the mouse, like a RTS, but that doesn't work for me. I can issue squad-level commands just fine, but nothing else.
Any help would be greatly appreciated.