Having a single vehicle that's able to do several jobs can really help out in combat. Sure, a specialized tank might be able to do one thing really well, but if you have a really versatile piece of equipment out there, you might be able to get several jobs done almost at once. That's the case with the SS-Ki Engineering Vehicle for the Japanese Forces in Bolt Action. It's like a Swiss Army Knife in tracked form.
The SS-Ki was used for: trench digging, mine clearance, the cutting of barbed wire, mass decontamination, chemical weapons usage in the field, a battlefield crane, a recovery vehicle, a flamethrower tank, and as a bridge-layer. That's... a lot of jobs for just a single vehicle. Now you can bring this tank to your tabletop battlefields as well.