[rammjaeger]

Sorry, my memory did cheat me. It was - according to Siegert - published in September 1915 and not spring 1915.
I possess II/1915 of "L´Illustration" but the pages 317-324 in September are missing in my copy. I assume German dealers of antique books try regulary to cut out these pages and sell them separate for very high prices because of the aviation content. At least I tried two times to buy "L´Illustration" with the pages 317-324 and both times the pages were missing and I refused the deals.

In generall I agree with the winter time but in long cold winters (like this year in Germany) the trees are still looking so in early April.

Maybe it was not an air combat at all - despite of "La Guerre Aérienne´s" claim - but a high-res picture shows a dark spot like blood on the chest of the aviator.
So did he become the victim of ground fire if no air combat fits??

I added photograph # 3.