Battle of Berlin
The battle on the city began in the Seelow Heights. The Seelow Heights are 17 kilometers west of the Oder and 45 kilometres east of Berlin. They were well defended by the Wehrmacht.  On 16 April, the Red Army and Polish Army attacked Seelow Heights.  Almost 1,000,000 attackers with 20,000 artillery pieces were fighting against 100,000 Germans with 1,200 tanks.  Despite this, the German defenders managed to hold the heights for four days.