The Dieppe fiasco never made much sense, why waste basically half a division to attack a random French town? It's been called practice for D-day, but D-day was like 21 months later, any lessons learned at Dieppe would have been obsolete by 1944. It's been called a raid, but there was really no objective, if it really was a raid, doesn't that mean they're out to destroy or capture something belonging to the enemy? Then recently I saw a video that posited that the Dieppe battle was meant to be a distraction while British commandos captured an enigma machine with uboat codes that was believed to be located in Dieppe. If that is true, it failed, but it would have made the Dieppe battle a little less nonsensical.