Tobias!! Guess what! We agree!!!! I don't think Bishop attacked Voss' Jasta either!!!!!
All that I have found indicates the most likely victim of Bishop's attack was Jasta 20. A group that was on the move during the time of Bishop's VC raid.
For, according to
The Jasta Pilots, not only was Jasta 5 not at Estourmel at that time, but Jasta 5 was NEVER at Estourmel during the whole war!!
AND on June 2, 1917, Estourmel was unoccupied. That's why I and others think the raid was at Esnes, and that Estourmel was the first field Bishop came to that appeared empty.
VBR,
Al Lowe