On the nearby roofs and balconies, the Germans placed nests heavy machine gun. The German patrols circulated in the streets around. In addition to the planned activities of the "Chwacki" patrols, three cars of Blue Police arrived to which the AK soldiers from the miners' cover opened fire. A shooting took place, which was joined by German forces along with an armored car resulting in the death of two soldiers of the Home Army, Eugeniusz Morawski and Józef Wilk, and the remaining four were wounded. Two Germans were also killed, several were wounded. Details of the Home Army's operation at the Ghetto wall on 19 April 1943   The first concept for relieving the Jewish insurgents by the Home Army (Armia Krajowa) with an attack on the Nazis, involving the blowing up a section of the Warsaw ghetto wall, was conceived in early 1943, some months before the actual outbreak of the uprising. At that time, the strength of the AK's Warsaw District was not especially strong. Tomasz Strzembosz in his book "Armed Actions of Underground Warsaw 1939-1944" leaves no illusions in that, at that time, only the sabotage units were able to take part in an open fight with the Germans. Three units were directly subordinated, among them the forty-member sapper unit of Capt. Jozef Pszenny "Chwacki." to take part and the chief commander of the Home Army issued an order to provide military assistance to the ghetto. By February 1943 Kedyw ("Kierownictwo Dywersji – Directorate of Diversion)" assigned a specific unit for the task, which was placed under the command of Józef Pszenny, "pseudonym" "Chwacki". This unit had carried out a successful attack on German Rail Transports under "Akcja Wieniec" in October1942. "Chwacki's" unit was tasked to attack the police and gendarmerie posts guarding the ghetto from the outside and to demolish part of the wall at a specifically agreed point, securing the opening created to ensure the safe evacuation of the Jews towards Żoliborz, which opened the way to the Kampinos Forest. During discussions conducted with representatives of the Warsaw AK District Command, the Kedyw Command and representatives of ŻOB (Żydowska Organizacja Bojowa), the Jewish Fighting Organization, it was agreed that a co-ordinated operation was to be carried out on Bonifraterska Street opposite Sapieżyńska Street.