Ursus Pattern super-heavy assault platform:

Built for the trenches in the Western Front, the Ursus was recieved well, though it had major issues. The heavy frontal protection and the modular loadout options made it ideal for leading attacks on fortified positions. It could navigate the mires of No-Man's Land and the forests of concertina wire with its massive tread pads and cutting claws. It was never built in large numbers, mainly due to the time and resource intensive nature of the fine motor control system for the pilot. Those few that were built were assigned almost exlusively to experienced aces, often with years of experience under their belt.