, the Wehrmacht invaded Poland, an act that initiated French and British declarations of war, and thus signaled the start of World War Two. With their massive numbers, superior weaponry, and Blitzkrieg tactics, the Wehrmacht quickly swept Polish defenders aside. Then, on 17 September, the Soviets attacked Poland from the east. As anticipated, the Polish civilian population fiercely resisted the Germans, typically in the form of sniper attacks. The Wehrmacht's usual wartime policy in dealing with civilian resistance was twofold. First, captured resisters were tried in a military court and if found guilty, executed. Second, if resisters evaded capture, community leaders were taken hostage and their lives threatened if the partisan activity continued. 1 However, on 3 September Himmler provided the German armed forces with a third and much swifter option: a shoot-to-kill authorization that allowed for the circumvention of a military trial. 2 Some members of the German armed forces interpreted the authorization as a right to kill whomever and whenever they wanted; indeed, this is what it was. Armed with such powers, sectors of the Einsatzgruppen occasionally engaged in mob-like violence, acts which greatly concerned the Wehrmacht Commander-in-Chief Walther von Brauchitsch. 3 Brauchitsch was so angry that on 21 September Himmler had to send Heydrich to personally smooth matters over with the powerful chief commander. Brauchitsch demanded one thing, the removal of Himmler's shoot-tokill order. In fear of having pushed influential figures in the Wehrmacht too far too soon, a few days later Himmler granted Brauchitsch's CHAPTER 3 World War Two and Nazi Forays into the Killing of Civilians