The account of Muller's 1915 wounding came from the book "Under the Guns of the Kaiser's Aces". On 31 March 1915 in the
FASWC has Sgt Bonette & ??? C47 2EA FTL, CGAS has this day Ofstv Paul Welk P FA32 killed Cambrai as the only other casualty. No claims in
TSTB. Looks like Bonette could have possibly got them both. As for 27 April 1915 there are no claims mentioned on this date in either the FASWC or TSTB.