Tim Balzner, In Case the Raid is Unsuccessful...': Selling Dieppe to Canadians, The Canadian Historical Review, Volume 87, Number 3, September 2006

Abstract
Before the disastrous 1942 Dieppe raid, allied authorities, headed by Lord Mountbatten's Combined Operations Headquarters, devised a publicity strategy to minimize negative press if the raid failed. This deceptive policy initially led the English-Canadian press to portray Dieppe as successful. However, as more information emerged, there arose a growing criticism of the raid in some Canadian newspapers. Yet the political leanings of some newspapers heavily influenced their editorial stance on the raid. The deceptive publicity efforts failed to convince many Canadians, although the reputation of Mountbatten and his organization was preserved.

Truth Still a Casualty at Dieppe
https://consortiumnews.com/2011/08/18/truth-still-a-casualty-at-dieppe/