At first- Great Gritnez to Gordy!! for Great War forum of course..
I have smth for Great War fans- it is RPM kit:
Instruction page 1
Instruction page 2
Frames:
Tracks
Track zoom 1
Track zoom 2
Details 1
Details 2
Details 3
Details 4
Details 5
Details 6
and at the end..
Decals
Thats photoethed parts from
Part -
plate 
First look- injected model- but some parts looks like short run
In details pics You can see separatlu tracks- i'm going to clone them - and make movable resin tracks
decals and painting shemes suggests some versions from Great War and from WW II- french, US and Polish
Threaded Mode