The force at Dieppe, put at roughly 10,500 troops in this comparison, far exceeded raids that usually involved tens or hundreds of commandos. Calling it reconnaissance in force did not reduce the defenses, logistical demands, or fire-support requirements of the target. Earlier raids could succeed through careful selection, surprise, and tightly limited aims, but many achieved little when political pressure favored visible activity over preparation. Dieppe magnified that problem by committing an invasion-sized force without the cruisers, battleships, minesweepers, and planning time available to a full assault.
Chapter · 1:18:00-1:34:40
Dieppe sent a large force against defenses without enough support
Operation Jubilee was far larger than ordinary commando raids, yet its short preparation left the assault without the heavy naval fire and mine clearance its target demanded.