Adolf Hitler,
Führer Directive 21
“ The Russian railways will either be destroyed, or, in the case of more important objectives close to hand (river crossings!) will be captured by the bold use of parachute and airborne troops.In order that maximum forces may be available for operations against the enemy air force and for direct support of the army, the munitions industry will not be attacked while the major operation is in progress. Only after the conclusion of the mobile operations will such attacks, and in particular attacks against the industrial area of the Urals, be considered. ”
