Halder's diary records a discussion of the plans for Fall Gelb after the Mechelen Incident of 10 January 1940.
Air effort to destroy enemy aviation is of prime importance. Present clear weather spell is not long enough. Better chances nor before March.
- Hence: Air Force must deliver first blow; orders not until the night before.
- Other missions: Enemy command organisation must be smashed. Headquarters. All must be attacked at the same minute, and with heaviest bombs. Other points of strategic importance.
Maastricht bridges must be captured intact: Occupation of Holland. Offensive must attain maximum penetration of enemy territory: Ju 88* England thus will not be attacked from the air in the first days. From third day onward, small groups of Ju 88 can attack England.