Simon Glancey has submitted the following:
Sgt. McCormack was killed when Vickers Wellington R1791 of 15 O.T.U. (Operational Training Unit) was lost on a mission to Cologne. Of the five crew, three were killed, one became a P.o.W., and the fifth evaded capture. The Wellington was one of several O.T.U. bombers used to make up the numbers for a 1,000 bomber raid.
Royal Air Force Bomber Command Losses of the Second World War: Vol. 7; Operational Training Units 1940-1947; W.R. Chorley; 2002; Midland Publishing; ISBN 1 85780 132 6, page 119
Tony Hibberd has added the following:
Wellington R1791 SM-R had departed Harwell at 2314 for Ops Cologne
It was intercepted at 2000M above Montigny-le-Tilleaul, 5km W of Charleroi by a Night-Fighter captained by Lt Helmut Niklas (VI/NJG1) and shot down at 0246 for his 1st Abschuss
Nacht Jagd Combat Archive The Early Years Part 3 Dr Theo Boiten
James McCormack is remembered in Benwell on B86.03 where his name is given as McCormick