It stands to reason that a Nazi sympathizer and Holocaust denier like David Irving would want to defame Churchill.
For a smaller volume with a grander overview having several veins, there is: America's Second Crusade by Chamberlin. "Road to War: Atlantic," "Road to War: Pacific," "Poland, The Betrayal," ..., "Crusade in Retrospect" are some of the chapters, from this a book published in 1950.
An example, Chamberlin quotes from Marshall's Report on the Winning of the War in Europe and the Pacific (pages 340-341) as:
"No evidence has yet been found that the German High Command had any over-all strategic plan ... Not only were the European partners of the Axis unable to coordinate their plans and resources and agree within their own nations how best to proceed, but the eastern partner, Japan, was working in even greater discord. The Axis as a matter of fact, existed on paper only."
And, "Wikipedia" - who?
But, back to Irving - his Chapter Ten "Gaps in the Archives" might be worth a scan. Comments, for example, on Stimson Diaries (Beinecke Library, Yale University) are spot on.