Short answers, pulled from the story.
White émigrés were Russians who emigrated from the territory of the former Russian Empire in the wake of the Russian Revolution and the Russian Civil War. Most white émigrés left Russia from 1917 to 1920, with estimates varying between 900,000 and 2 million.
Most émigrés initially fled from Southern Russia and Ukraine to Turkey and then moved to other Slavic countries in Europe. A large number also fled to Estonia, Latvia, Lithuania, Finland, Iran, Germany and France, while others traveled to China, Japan, and various nations across South America and Australia during and after World War II.
White émigrés were generally anti-communist and did not consider the Soviet Union and its legacy to be representative of Russia but rather of an occupying force. Many believed that their mission was to preserve the pre-revolutionary Russian culture and way of life while living abroad.
On the 17th of May 2007, the Act of Canonical Communion with the Moscow Patriarchate reestablished canonical ties between the Russian Orthodox Church Abroad and the Russian Church of the Moscow Patriarchate. This event occurred after more than 80 years of separation following the formation of the church in 1924.
Japanese scientists conducted human experiments on White Russian men, women and children by gassing, injecting and vivisecting them in Unit 731 and Unit 100. Some children grew up inside the walls of Unit 731, infected with syphilis, and victims included a Russian girl and her mother who were gassed.