Sub - district VII of Warsaw suburbs ( of Armia Krajowa ) The Sub - district VII of Warsaw suburbs ( of Armia Krajowa ) ( Polish : " Obwód VII Warszawa podmiejska " ) also called " Sub - district collar " ( Polish : " Obwód Obroża " ) - a territorial organisational unit of the District of Warsaw of Armia Krajowa , which acted during the German occupation of Poland . Military units of that sub - district took part in the Warsaw Uprising of 1944 . Organisation . The sub - district operated since 1940 and covered the area of the then powiat of Warsaw , excluding the city area of Warsaw itself . During the whole period of German occupation the chief of the sub - district was major Kazimierz Krzyżak pseudonym " Bronisław " or " Kalwin " . The sub - district was divided into regions : In spring 1944 there were 176 military platoons ( line , special task and auxiliary service ones ) organised in the sub - district , which included ca 10 , 000 people . Course of combat in the Warsaw Uprising 1944 . Region I - fights lasted there during several initial days of August . Not the whole area was seized and major " Grosz " commanded to return back to conspiracy . Part of the units were concentrated in neighbouring forests . A battalion , having supplemented its weapons , commanded by lieutenant Bolesław Szymkiewicz pseudonym " Znicz " , crossed Wisła river and took part in fights of the Kampinos group . Region II - fights lasted also during several initial days of August only . Units fought with a local German garrison and cooperated with the armoured spearhead of the Red Army in the section of Wołomin - Struga . Upon the withdrawal of the Soviet units , it became impossible to continue the fight . Region III - line units turned up in assigned places of concentration . In the face of a large saturation of the area with German units , the planned military actions were not developed . Reconnaissance was carried and contact was kept with the Sub - district VI . A group of ten to twenty soldiers commanded by officer cadet Czesław Nalewajko pseudonym " Cimurak " swam across Wisła river and included in the fights of the " Baszta " regiment . Region IV - because of a stabilisation of the front line in the area of Radość , the region was divided into two parts : In the northern part no military actions were taken up . In the southern part , actions were taken aimed to provide assistance for advancing soldiers of the 27th Wołyń Division of Armia Krajowa . In September , medical aid was provided for insurgents of the " Kryska group " , who succeeded in swimming across Wisła from the Czerniaków bridge - head to the Praga bank of Wisła river . Region V - it covered the Chojnowo forests , which were place of concentration of the sub - district ' s units as well as units of the Sub - district IV of Ochota ( of Armia Krajowa ) and Sub - district V of Mokotów , which failed to perform their military action on their own area . The commander of the Sub - district IV of Ochota lieutenant - colonel Mieczysław Sokołowski pseudonym " Grzymała " , who had withdrawn to the Sub - district V , decided to take up an attack to Wilanów / Sadyba , aimed at joining with units fighting in Warsaw . The attack failed . Lieutenant - colonel " Grzymała " fell in Wilanów . Only one company commanded by sec . lieutenant Stanisław Milczyński pseudonym " Gryf " managed to force its way to Wilanów . The remaining units of the sub - district withdrew to the area of Chojnowo forests . Region VI - its units concentrated in the Sękocin forests , but apart from local fights they did not take up larger military actions . The Women Military Service established communication with the commandment of the sub - district of Śródmieście . Additionally , it was provided help for Warsaw inhabitants and insurgent soldiers interned in the Pruszków camp . Region VII - large German forces concentrated in that region . In Oźarów it was stationed the staff of general Erich von dem Bach - Zelewski . It made impossible to take up military actions by the insurgents . Major " Jarema " formed a company , which moved to Kampinos Forest and submitted to the command of the Kampinos group . Rejon VIII was the operational area of the Kampinos group .