What happened to the german "6th army" at the battle of stalingrand

The army surrendered between 31 January and 2 February 1943. German casualties are 147,200 killed and wounded and over 91,000 captured, the latter including Field Marshal Paulus, 24 generals and 2,500 officers of lesser rank. Only 5,000 would return to Germany after the war.

Explanation:

the answer is a glaciers carved a large valley that later flooded and became puget sound