Aut cum scuto aut in scuto
I think it is actually a Caterpillar. SeaBees, the " Can Do!" people, used Internationals. For some reason, the Army got GMC trucks, and Caterpillar crawlers, while the USN got Internationals.
Whoever loaded that load (those loads?) of logs did a better job than a lot of guys do today with modern machinery. You'll notice the use of 'gut wrappers' on both trailers. Those logs aren't going anywhere.
They pulled some serious loads in the ADK in the early 1900's with Linn tractors.