Here’s a list of American KIAs during WWII. I’m sorry – but I don’t have a list of British KIAs. But take a look at my site, many of the KIAs is listed there.
BG Gustav J. Brann Jr. KIA in the Mediterranean, March 17, 1945
LG Simon B. Buckner Jr. KIA on Okinawa, June 18, 1945
BG James L. Dalton II* KIA on Luzon, May 16, 1945
BG William O. Darby KIA in Italy, April 30, 1945
BG Claudius M. Easley KIA on Okinawa, June 19, 1945
MG Maurice Rose KIA in Germany, March 30, 1945
BG Edmund W. Searby KIA in France, September 14, 1944
* Promoted BG posthumously
BG Frederick W. Castle KIA on December 24, 1944
BG William H. Eaton KIA in France, February 6, 1945
BG Nathan B. Forrest KIA over Kiel, Germany, June 14, 1943
BG Russell A. Wilson KIA over Berlin, Germany, March 6, 1944
Jack’s list for the US Navy seems complete to me.
I’ve omitted MIAs and accidental deaths i.e. plane crashes.
The Generals of World War II