Short answers, pulled from the story.
Operation Bagration was the Soviet Byelorussian strategic offensive operation, fought between the 22nd of June and the 19th of August 1944 on the Eastern Front of World War II. It targeted Army Group Centre in Soviet Byelorussia and resulted in the largest defeat in German military history, with around 450,000 German casualties.
Operation Bagration destroyed 28 divisions of Army Group Centre and eliminated around 450,000 German soldiers, losses that exceeded even those at Stalingrad in proportional terms. Thirty-one of the 47 German divisional and corps commanders involved were killed or captured, and 19 divisions were disbanded outright.
The Soviets deliberately left four tank armies visible to German intelligence in the Lvov region, leading the German High Command to expect the main Soviet offensive in the south against Army Group North Ukraine. Meanwhile, the Red Army secretly massed its main strike force opposite Byelorussia, where Army Group Centre had been stripped of most of its tanks and artillery.
Aleksandr Vasilevsky and Georgy Zhukov served as Stavka's special representatives coordinating the operation. Front commanders included Ivan Bagramyan, Ivan Chernyakhovsky, Georgiy Zakharov, and Konstantin Rokossovsky, whose plan for the Bobruysk offensive earned him promotion to Marshal of the Soviet Red Army.
Some 57,000 German prisoners taken from the encirclement east of Minsk were marched through Moscow in an event that became known as the Parade of the Vanquished. Moving quickly and twenty abreast, the column took 90 minutes to pass through the streets.
The offensive cut off Army Group North and Army Group North Ukraine from each other, set the stage for the isolation of 300,000 German soldiers in the Courland Pocket, and allowed Soviet forces to reach bridgeheads over the Vistula River near Warsaw. Those bridgeheads became the starting point for the Vistula-Oder Offensive, which carried the Red Army to within sight of Berlin.