>>5369888>>5369881>>5369859>>5369858>>5369912These are the plans of DDay simplified extremely.
Note, that Erwin Rommel was in charge of the Defenses, and after the order came to double down, he made sets of fall back positions all the way to Caen.
He knew that they would come to take it with whatever they had, so he built up the city. He also asked for another division, one of which was pulled from the eastern front after being badly damaged, and was meant to replenish and resupply its troops. They were stations there along with the 352nd and the one Panzer division.
3 weeks before dday, Hitler was made aware of the invasion and Operation Bodyguard (the fake planes and stuff). He ordered Rommel to shift them down in preparation for the attack.
The allied leaders received notice from ariel reconnasanse, and French resistance groups that they were shifting south, but only 5 days from D-Day. They had mutually agreed that scrapping the plan was to costly, and with Stalin banging at their door for help, (the invasion which was supposed to happen way way before then), they Approved it anyways and carried out their plan.
The Allied bombings from planes, did a little more damage deviating from IRL, and the Naval bombardment was also on par with the real world. Now, The Paratroops, Rommel was expecting some trully massive aerial drop, so he prepared accordingly. He set up AA and Flak positions to blow the gliders, and set up elite hunter-killer squads to mop up the Paratroopers that got through. Some may have noticed the 1 I rolled which resulted in the Tiger 2 arriving for our defense. That was the paratrooper roll. Needless to say they got royally fucked, and wiped out to a man. 101st? Completely wiped out.
Now on Juno, Gold, and Sword, Rommel knew that the beach defenses wouldnt hold, so the Brits took the beach, and even started landing LSTs. But Rommel forced them into massive trench warfare, to even gain the slightest bit of ground after they took the beach. In doing so Rommel lured in many more troops and killed them off, truly decimating the British Army.
Now the Air battle. That was a sight to behold. After the initial landings, Stuka and Bf109 squadrons, transferred from Berlin itself, took to the skies and fought tooth and nail for air superiority. They eventually whittled eachother down, and they both went home on a draw. (something that would never have happened if Hitler hadnt been made aware of the invasion by spys)