In Military Engineering Volume V dated 1944 (Reprint)1954page6 it shows Caterpillar D2 also picture of the crawler with a La Plant Choate angledozer and a Hyster winch, so it would appear that this little dozer was indeed used by the Military Engineers. I wish I could post pictures out of this booklet, but yet scans were refused, this does not happen on any other formums, B*** shame. John.
I also have TM5-3086 Tractors,crawler Diesel 70 - 90 DBHP Caterpillar D7 Maintenance Instruction and parts catalog.