Day 2 The WW II stuff (it can be done in a day, but it's a long one) Leave by seven and haul tail for Bayeux, stopping in Caen only to eyeball St Stephen's church where William the Conqueror exploded at his funeral (hot day, fat guy, small coffin, poor embalming, kapoooow) (the Bayeux military museum is better by a long shot although the one at Caen is the one that's touted all the time). The drive is an even hour. The slide through Caen adds a half hour. You'll need two hours at the military museum and one for the tapestry museum (earlier invasion going the other way, free audio guides in any language, if you listen to every bit of it, it actually take about forty minutes). Find something to eat and head for the American Cemetery. You'll need an hour to walk in, look at the crosses and stars, and, most importantly historically, look at the giant diagrams in the pavilion that depict the invasion sequence and the rest of the war campaign. Omaha Beach is just down the hill. Less than an hour does it. The cliffs are to the west.
All of the invasion beaches look pretty much alike, there's old gun emplacements around, but not really that much to them. After that you have to pick and choose depending on interests. The beachhead was close to fifty miles long and the early parts of the campaign extended twenty miles inland. Sainte Mere Eglise (dude in a parachute hung up on the church steeple) is a bit more than a half hour out the peninsula. It's more of a tourist catcher. The museum is really only of interest to an airborne nut - - I have both pilot's and jump wings and have only gone inside once - - for fifteen minutes.