Preliminary orders were received on 9 May, ordering the separated detachments to move to a pre-arranged concentration area, and shortly afterwards a second order arrived, informing the assault force that Fall Gelb was to begin at 05:25 on 10 May.
初步命令是在5月9日收到，命令分散的部隊移動到預先安排地區集中，其後不久，第2個命令到達，通知突擊隊黃色方案是在5月10日早上5時25分開始。