There are two versions of this sentence

One is that a soldier wrote it in his diary. He later died in battle, and his diary was published and widely circulated.

The second is that almost all of a regiment was killed in the battle to resist the German army, with only 15 people left. A captain said, "We can no longer complete the arduous mission entrusted to us by the people and can only retreat. However, we can Where should we retreat?" The captain suddenly shouted, "Behind us is Moscow! Comrades, behind us is the capital of our great motherland!"

The captain continued, "Russia is big, but we are. There is no way to retreat, behind us is Moscow!" Then he charged with the last 14 people, and in the end two seemed to survive and told this story.

English: Russia is great, but we are setting corner, we have the funeral is Moscow

Russian: Россия велика， но мы все настройки угла， мы на похоронах Москва

Joseph Weisalianovich Stalin

English: Joseph.WeisaliangNorwich.Stalin

Russian: Иосиф.В.Сталин

（ From netizen BILL Lei Ye)