[mkenny]

To further confuse things 'official' wartime photos were distributed to all the Picture Agencies by both The Germans and The Allies free of charge. Pathe for instance has for sale its WW2 Newsreel footage that is, for the most part, made up of the footage taken by the combat cameramen and the rights are now held by the IWM.
There are hundreds of photo agencies that have 'copyright' of these (sometimes) famous photos so how do you decide who has to be credited?
Bovington Tank Museum sells copies of photos that belong to Koblenz so I would say it would be impossible to show where the copy used came from
Has anyone ever been forced to pay royalties for any WW2 photo?
I have never heard of it happening.