エバン・エマール要塞
For reasons of security, Sturmabteilung Koch was dispersed around several locations in the Rhineland until it received orders for the operation against Fort Eben-Emael and the three bridges to begin. 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.