Simon,
2nd Lieutenant William Lewis Thomas : 6th Manchesters & RAF
Thank you for your interesting and valuable contribution to the thread.
I can add little to the info. you gave in your post, but nevertheless, I had a look at what I have to hand.
My info. states that he was on an Offensive Patrol (with Cpl. Bowles as gunner) on the 11th March 1918, flying a Bristol F2b aircraft, when at noon in the St. Quentin region they were in combat with enemy aircraft. I note that von Richthofen claimed victory in this encounter, which he said took place near Fresnoy-le-Petit at 1.10.p.m., presumably German time.
I traced the lieutenant to an operation on the 24th April 1918 (you state the date was 23rd April), whilst on a solo flight in a Bristol F2b. During this flight he was hit by rifle fire and classified as WIA. The report on air activities on 24th April 1918 indicates that flying conditions were such that airmen were driven low and casualties from ground fire were high. Your report of a thigh wound could be attributed to such fire?
As regards gathering further info., I can offer little advice, although there is a colleague and excellent contributor to this thread, who frequently is able to add details to my research and, no doubt, when reading this piece will see if he can help.
In the matter of the 1993 letters, I hope that you were able to read my handwriting! My visits to Ashton must have been the start of my "following in the footsteps of the 2nd battalion", which to some extent I am still doing. Regards, PhilipG.