The following photos of a captured French truck with a 75mm gun popped up on ebay that might be of interest. Not clear if the photos war from the WW1 or WW2.Â
http://www.ebay.de/itm/franz-Flak-SFL-Panzer-De-Dion-et-Bouton-75mm-Autocannon-sehr-selten-1-/271787008954?pt=Militaria&hash=item3f47c4a3ba
http://www.ebay.de/itm/franz-Flak-SFL-Panzer-De-Dion-et-Bouton-75mm-Autocannon-sehr-selten-3-/271787010756?pt=Militaria&hash=item3f47c4aac4
http://www.ebay.de/itm/franz-Flak-SFL-Panzer-De-Dion-et-Bouton-75mm-Autocannon-sehr-selten-2-/271787009954?pt=Militaria&hash=item3f47c4a7a2
Regards,
Chris.Â
I would say judging by the crinkled edge of the photo, WW2 taken by a German soldier
Manuals: "De Dion Bouton" Â for "Auto canon de 75" Vehicle only:
https://archive.org/details/BSG709390070
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"Ash nazg durbatulûk, ash nazggimbatul, ash nazg thrakatulûk, agh burzum-ishi krimpatul"