From Berlin… Revised orders for the attack in the west are issued. OKH has been conducting exercises throughout the winter and especially in the early days of this month because of dissatisfaction with the attack plan. Following Manstein's conversation with Hitler on March 17th and an OKH presentation to him on the 18th it has been decided to revise the plans to emphasize the role of Army Group A and an attack through the Ardennes. As far as technique goes the plans are fairly traditional. The emphasis is still not yet fully on the possibilities of the panzer advance. Rundstedt and Bock, who will be the principal commanders are, despite their considerable abilities, wedded to the conventional infantry-based ideas. Although the direction of the attack is certainly bold, the old school see early problems when it becomes necessary to cross the Meuse River. The tank enthusiasts, like Guderian, are more concerned about exploiting the advance after the crossing.

In Copenhagen… A Scandinavian neutrality conference is held by the attending foreign ministers.

In Rome… Germany and Italy sign a trade agreement giving the Italians an increased coal supply.