Hello TD.
What a great job with the latest ground units. Some of them were very outdated, as the BT and KV tanks; as well as new variants, that are always welcome. About the trains, just one word: marvelous.
And as a source, in case you don't know it, try this website:
www.o5m6.de Lots of Soviet and Lend-Lease vehicles profiles, including AFVs, trucks, ships and, of course trains. Hope it helps.
Keep up the good job. Best regards,
batistadk