In subject of of 75mm AA mle 1913 best page with description
French modernized some of guns in 1933 to be able fight with tanks also.
They were called
Autocanon de 75 Mle 1913/34 but cars remain the same original De Dion Bouton from times of WWI. 57 AA batteries still used them in 1940 during French Campaign.
https://translate.google.pl/translat..._bouton_aa.htm
There is translated page from polish with photos of French modernised variant
https://translate.google.pl/translat...plot75mm-fr%2F
Poland used French unmodified version from WWI here photo from movie 1937.
https://www.imcdb.org/v256962.html
And here photo of Orginal version lost in Mielec in 1939
https://pl.wikipedia.org/wiki/75_mm_...nicza_mle_1897
Additionally to that Poland has modified variant
PF621L were this gun was mounted on new car here are photos and story of their usage in 1939.
http://www.weu1918-1939.pl/75-mm-dzi...biezne-pf621l/
According to story Poland has three batteries of this cars 4 vehicles each they fight al thee way from Katowice Silesia to Romanian border destroyed 6 aircraft's and around 6 tanks fights were with German's and Soviets as well.
Re: French OOB06 (v.7)
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