This is an excellent history of a small unit action set in the wider context of the war, and well explained for those not steeped in military history or the second world war.
IWM caption : THE DIEPPE RAID, 19 AUGUST 1942 Lt Col The Lord Lovat, CO of No. 4 Commando, at Newhaven after returning from the raid. (Photo credit: Wikipedia)
The author starts with setting the background, explaining the grand sweep of the war and the events that lead to the formation of the commandos in mid-1940 and then a high-level overview of the commando training and the early operations so that you understand what commandos are all about, and the strategic context that lead to the assault on Dieppe in late summer 1942.
The build up to the attack is well covered, based heavily on the account by the embedded journalist that accompanied 4 Commando. After that the assault narrative splits into two, one for each of the groups that landed, and based on a mixture of accounts and interviews with various survivors of the operation.