Leningrad Oblast
In 1914, Saint Petersburg was renamed Petrograd. The governorate around the area was renamed the Petrograd Governorate. After the Russian Revolution, the capital was changed to Moscow. In 1919, during the Russian Civil War, the Northwestern White Army advancing from Estonia and led by Nikolai Yudenich tried to capture Petrograd and even managed to reach its southern outskirts. However, it ultimately failed and Yudenich retreated.