 Marshal Erwin Rommel returned to Germany for his wife's birthday and to meet Hitler to try to get more Panzers.Had Eisenhower postponed the invasion, the next available period with the right combination of tides (but without the desirable full moon) was two weeks later, from 18 to 20 June.As it happened, during this period the invaders would have encountered a major storm lasting four days, between 19 and 22 June, that would have made the initial landings impossible.