Any train guys need some info

[pro]

I have dragons 1/144 military German train sets but until recently they didn't have any trains the recently released two armored locomotives but I'm interested in trying to build a standard steam engine. There so many types listed I'd like to know what types of steam locomotives were commonly in service during the war I'm sure like the USA there were a select few locomotives they preferred and operated. It's usually so in most countries they have equipment they feel is best for their needs and usually order a number of units. Like here there were a few locomotives that the railroads liked the best and had hundreds built. The dragon armored trains are armored all the way to about a foot from the ground so there's not much detail to see as far as the wheels and such. But they will still add to my collection. Any way thanks for any info I would appreciate it.