Came across this one today through a link on ww2talk. Very good read. The CRUSADER section starts on page 5, where he has lost the date (second column).
David Ling M.C.
I have previously posted about the 44 R.T.R.’s role in the famous night attack on Belhamed at this link.
The diary can be found at this link (pdf).
A brief history of the regiment during the war can be found at this link.
Major Ling has his own entry in Tank Men by Robert Kershaw, at this link. He was promoted to Major on 13 December 1941,
His private papers are preserved at the IWM with a description at this link.