Well, I based on summarization from all three pics, I would say you have been in combat and hit by rounds from a FE2b, and I'm surmising that you were forced down by damage or fuel loss at which point you came a cropper on a fence.
What do I win if I'm correct??
Maybe you could win a crappy little piece of software, hastily patched together, that should allow us to analyze mission events and performance
1) took off from Bertincourt in an Halberstadt, leading a flight of Albatros DII, and headed NE
2) as soon as we turned NW, after about 7 minutes of flight, 2 DIIs collided and crashed somewhere in the vicinity
3) we followed the waypoints climbing steadily and circled over the patrol destination, S of the river, at about 3500m for about 20 minutes
4) then descended to 2500m and went N towards Bapaume
5) 15 minutes later we met 2 FE2b North of Bapaume at about 2000 m, heading West; attacked from the rear left, scored some good hits on e/a #2B, but #2A shot down my engine
6) after shooting some more towards #2A, with engine dead, I turned right and searched for a good place to land towards the East
7) as I was trying to line up with the road, my a/c stalled (the little arrows are a representation of the velocity vectors, short length of the arrows indicates slow speed) and fell like a brick. Dead.
Didn't we say that a picture was worth a 1000 words?