Attractions Calvados deserves a closer look: cider, cheese, calvados, picturesque old towns and trendy resorts nearby. And the beaches are wonderful everywhere. The whole line of beaches is also connected with the history of D Day. For the D Day I give a separate map.
Perhaps few will get to Orne, it is too far from the sea, but it makes sense to study the map of Orne too – maybe you will want to stop there for a couple of days on the way.