WW 2 Vehicle Repair diorama

Under the conditions at the time, even more detailed repair woirk would be done in hstily set up camps a bit furher behind the lines where repairs could be conduced away from the enemy. Unless useing a captured enemy base, equipement would be what ever was brough with them. Unforunatly this part of war often gets overlooked, for pics are hard to come by.

I would look for photo's of the terrain in the country you want to portray and just set up a field repair camp.

Two M3s during Sherman tank repair in 26th British Armoured Brigade workshops in Perugia, Italy. 

I found this online...I hope it gives you some type of idea how to proceed with your dio. It looks like they worked in open area's with little to small rolling hills in the background. As Bish stated, it should be toward the rear of the battle lines.

Boy are you correct about this part of the war being overlooked! I have a few pictures from NW Europe  [France I think ] where they appear to be in an old factory building or something. Thanks for the pictures! 

Try looking up US Army ordnance unit or depot in your image searches. The stuff was documented, it's just all in the terminology.

Years ago I had a fantastic photo book, "The War in Europe". It was a compilation of US Army Signal Corps photos documenting the Army's role in the war in the ETO, from the first arrivals to VE Day. It covered such mundane things as shoe repair, and all the other unsung support personnel, as well as the leaders and the grunts, tankers, etc. It is published by the Centerfor Military History as part of the official Army History of WWII. Unfortunately my copy was water damaged by a broken pipe and subsequently disposed of. But it has the sort of photos your looking for, along with all sorts of combat photos. There are similar volumes for the MTO and PTO. 

image search for "us army tank repair shop WWII"

I probably need to get over to the US archives  (which are just down the street) and do some research. I know the signal Corp should have pictures, that is where I saw some before - a unit history I think.  

I know its old school.....but go to your local library and look for WW2 books. Ours has a series called WWII in Color ..some great reference photos. I use them all the time

I'm can't figure out how to paste, but search in utube for this, a really cool video from someone who was at a truck assembly depot in France. Unfortunately most of what I can find is for NW Europe rather than the areas I am after.

148th MVA OrdNance WWII Dad

The set up would be the same in Europe as in Africa and Italy. So its only the terrain that wil be differant.