Which major Russian operation forced German troops out of Belarusian and Polish territory in 1944?

Operation Overlord

Battle of Leningrad

Operation Bagration

Battle of Stalingrad

Operation Bagration, The Red Army successfully used the Soviet deep battle deception strategies for the first time to a full extent, albeit with continuing heavy losses. Operation Bagration diverted German mobile reserves to the central sectors, removing them from the Lublin-Brest and Lvov-Sandomierz areas, enabling the Soviets to undertake the Lvov-Sandomierz Off This allowed the Red Army to reach the Vistula river and Warsaw, which in turn put Soviet forces within striking distance of Berlin, conforming to the concept of Soviet deep operations-striking deep into the enemy's strategic depths.