699th Infantry Regiments. The 125th Infantry Regiment arrived from Greece to Belgrade to participate in this operation. To clean the area between river Sava, river Drina and mountain Cer the Böhme also engaged the 718th Division that came from Bijeljina and parts of the 704th Division that came from Valjevo. NDH General Slavko Kvaternik offered to put on disposal at least 12 battalions or more. Eventually, six battalions of the Ustaše Militia and Croatian Home Guard participated in this operation. At the beginning of September 1941 the representative of Germany Siegfried Kache, leader of German population in the NDH, Branimir Altagayer, župan of Vuka and other German and NDH representatives agreed to dispatch one company of Einsatzstaffel with 300 soldiers to participate in the operation against Partisan and Chetnik forces in Mačva waged between 24 September and 7 November 1941. The Axis forces were supported by squadron of Junkers Ju 87 and Hungarian Danube river fleet of two River gunboats and one motorboat. Rebel forces When German forces started with the operation the rebel forces were concentrated around Šabac during their Attack on Šabac that started three days earlier. The Chetnik Cer Detachment led by Dragoslav Račić was composed of the following companies: Cer company commanded by the Lieutenant Ratko Teodosijević Čokešina company Mačva company commanded by Lieutenant Nikola Sokić Machine gun company commanded by Lieutenant Voja Tufegdžić Prnjavor company Martinović-Zečević unit commanded by Vlada Zečević and Ratko Martinović The communist forces were composed of the following Detachments: Podrinjski, Posavski and Valjevski and commanded by Nebojša Jerković. The operation "Mačva" Initially, Böhme planned to cross river Drina with 342nd division and to destroy rebels in the Mačva region attacking them from south toward north. He changed his mind because he was concerned that this tactic would expose flanks of the 342nd division to attacks of rebel forces from mountain Cer-Iverak. Based also on the proposal of Kvaternik, who pointed to the experience from the 1914 Battle of Cer when the majority of Austro-Hungarian troops attacked Serbia crossing the Drina only to be defeated by the Serbian army, Böhme adopted the plan to attack rebels with troops crossing river Sava. The final plan for the cleansing operation was simple: to preserve an element of surprise, the 342nd division would be unloaded in the NDH, cross Sava river, clean region of Mačva and then to advance into the rebel-controlled territory in direction