The whys and wherefores of Operation Jubilee have been discussed ad infinitum however, whatever the conjecture there was one very positive result - it concerns the performance of the Churchill tank.
Despite Hitler, after Dieppe, commenting: "This is the first time the British have had the courtesy to cross the sea to offer the enemy a complete sample of their new weapons," one lesson that could have been learned by the Germans was not.
Using the Churchill Mk1s in combat - that were universally disliked in testing.
This is misleading - The 29 tanks exited the landing craft as follows: Mark I Reworked - 4. Mark II - 4. Mark III - 18. OKE Flamethrower - 3.
The Mark Is (equally divided between 'B' and 'C' Squadron's HQF Troops) intended purpose (other than command) was to fire 3 inch HE while the Mark IIIs made their way up to the promenade. Despite the track problems caused by having to negotiate a chert beach - not 'shingle' as so often incorrectly stated - all but three managed to climb up and over the sea wall, only to find they could not proceed into the town as the road blocks had not been demolished as was intended.
While the first Mark Is had problems, they were largely overcome in the Reworked versions and the later Mark Ics, that saw action in Tunisa and Italy. Each unit in the two Brigades had six - the North Irish Horse, the regiment in which I served, had the only Cs Churchills fitted with German cupolas.
The "Mountain Goat" successes were substantially due to lessons learnt at Dieppe - fortunately not so by the Wehrmacht.