old movies, old tv shows ( combat for example ) and , documentaries.

WWII images are often more about capturing a posed scene or a post-battle vehicle scene.

An art teacher of mine always used to say "the best ideas come in 2 places.... When you are having a smoke or when you are on the loo."

Good ideas can come from anywhere. I save every pic that I see potential in for a future diorama. It is true that often in books you see the posed scenes but there are also tons and tons of personal soldiers pics. Check out the militaria section on Ebay Germany for instance on "Foto" and you will encounter thousands of private pics up to complete albums. I have a couple of original WW2 albums and a big load of separate pics. They can be a great inspiration. I work a lot of vintage pics.
That said. Returning to the phrase from my art teacher I started out with in this post. Most of my dio ideas come from the dark corners of my own mind. Pretty much any fun scene you see can be turned around to a military theme. Swap vehicles and figures and it would work just as well as it did with normal civilian vehicles and attire. Same goes with movie scenes. Even pics from modern situations can in most cases be turned to a WW2 situation.

And sometimes a good idea just pops in your head (whether or not you are on the loo or having a smoke outside.) The other day I was checking in a box of spares and found 2 Tamiya Jeeps and suddenly thought how fun it would be to make a scene where bored soldiers have turned them into racecars... racenumbers and all. Then another idea popped into my head. Why not have it be a race between Army and Airforce, Or Army against Navy. Followed up by the idea of having it centered at the Belgian town of Spa where the famous racingtrack of Spa Francorchampsis located.
There you have it in the timespan of 7 minutes I thought out a completely new dio idea centered around the liberation of Spa where 2 divisions or 2 army branches are preparing to race against each other in Jeeps on a famous classic racetrack. Guys cheering on their racers. Taking bets etc. having drinks. Mechanics walking around the cars. The drivers with old style racinghelmets and goggles. No clue if it ever happened. And I don't care either. It is exactly what bored soldiers do

The other day I was checking in a box of spares and found 2 Tamiya Jeeps and suddenly thought how fun it would be to make a scene where bored soldiers have turned them into racecars... racenumbers and all. Then another idea popped into my head. Why not have it be a race between Army and Airforce, Or Army against Navy. Followed up by the idea of having it centered at the Belgian town of Spa where the famous racingtrack of Spa Francorchampsis located.
There you have it in the timespan of 7 minutes I thought out a completely new dio idea centered around the liberation of Spa where 2 divisions or 2 army branches are preparing to race against each other in Jeeps on a famous classic racetrack. Guys cheering on their racers. Taking bets etc. having drinks. Mechanics walking around the cars. The drivers with old style racinghelmets and goggles. No clue if it ever happened. And I don't care either. It is exactly what bored soldiers do