Battle of Berlin - Preparations

Preparations

Further information: Order of battle for the Battle of Berlin

The Soviet offensive into central Germany—what later became East Germany—had two objectives. Stalin did not believe the Western Allies would hand over territory occupied by them in the post-war Soviet zone, so he began the offensive on a broad front and moved rapidly to meet the Western Allies as far west as possible. But the overriding objective was to capture Berlin. The two goals were complementary because possession of the zone could not be won quickly unless Berlin were taken. Another consideration was that Berlin itself held useful post-war strategic assets, including Adolf Hitler and the German atomic bomb program. On 6 March, Hitler appointed Lieutenant General Helmuth Reymann commander of the Berlin Defence Area, replacing Lieutenant General Bruno Ritter von Hauenschild.

On 20 March, General Gotthard Heinrici was appointed Commander-in-Chief of Army Group Vistula replacing Reichsführer-SS Heinrich Himmler. Heinrici was one of the best defensive tacticians in the German army and he immediately started to lay defensive plans. Heinrici correctly assessed that the main Soviet thrust would be made over the Oder River and along the main east-west Autobahn. He decided not to try to defend the banks of the Oder with anything more than a light skirmishing screen. Instead, Heinrici arranged for engineers to fortify the Seelow Heights which overlooked the Oder River at the point where the Autobahn crossed them. This was some 17 km (11 mi) west of the Oder and 90 km (56 mi) east of Berlin. Heinrici thinned out the line in other areas to increase the manpower available to defend the heights. German engineers turned the Oder's flood plain, already saturated by the spring thaw, into a swamp by releasing the water from a reservoir upstream. Behind plain on the plateau, the engineers built three belts of defensive emplacements reaching back towards the outskirts of Berlin (the lines nearer to Berlin were called the Wotan position). These lines consisted of anti-tank ditches, anti-tank gun emplacements, and an extensive network of trenches and bunkers.

On 9 April, after a long resistance, Königsberg in East Prussia finally fell to the Red Army. This freed up Marshal Rokossovsky's 2nd Belorussian Front to move west to the east bank of the Oder river. Marshal Georgy Zhukov concentrated his 1st Belorussian Front, which had been deployed along the Oder river from Frankfurt in the south to the Baltic, into an area in front of the Seelow Heights. The 2nd Belorussian Front moved into the positions being vacated by the 1st Belorussian Front north of the Seelow Heights. While this redeployment was in progress, gaps were left in the lines and the remnants of General Dietrich von Saucken's German II Army, which had been bottled up in a pocket near Danzig, managed to escape into the Vistula Delta. To the south, Marshal Konev shifted the main weight of the 1st Ukrainian Front out of Upper Silesia and northwest to the Neisse River.

The three Soviet Fronts had altogether 2.5 million men (including 78,556 soldiers of the 1st Polish Army), 6,250 tanks, 7,500 aircraft, 41,600 artillery pieces and mortars, 3,255 truck-mounted Katyusha rocket launchers (nicknamed 'Stalin's Pipe Organs'), and 95,383 motor vehicles, many manufactured in the US.