International Harvester tractor? Use? pictures? how many built?

[Grant Bowker]

I don't know anything about the actual use of the tractor, but can speculate.
It looks like it has a ground anchor/spade on the rear to resist sliding backward while winching.
Since tractors are slow on the road, even by WW2 standards, it is likely it was trailered to wherever it was needed - in spite of the full fenders fitted.
My guess is that it would have been anchored using the earth spade and/or the large ring fitting on the front end and used to winch something like a Bailey bridge into place as it was being constructed. (based in part on the Corps of Engineers data plate)