Science Fair Project Encyclopedia The Dieppe Raid or The Battle
of Dieppe or Operation Jubilee was an Allied (mainly Canadian)
attack on the German-occupied port of Dieppe, France on August
19, 1942 during World War II. On the day, the raid was mostly an
unmitigated disaster, very little was achieved and 60% to 70% of
the 5,000 who made it ashore were killed, wounded or captured.
The origins of the raid are rather unusual. Various raids had
been planned, but the Dieppe raid was brought into reality only
by the desires of the new Chief of Combined Operations, Louis
Mountbatten. One of Mountbatten's principal assistants, Captain
John Hughes-Hallett, served as Naval Commander of the raid. The
actual raid was undertaken without the approval of the Combined
Chiefs of Staff and many elements in the planning suffered from
the unofficial nature of the raid. The previous Chief of
Combined Operations, Roger Keyes, who had commanded the famous
raid on Zeebrugge in 1918, had been ordered to organise raids on
occupied Eur