The most successful Russian military operation of the First World War, led by General Aleksei Brusilov, against Austro-Hungarian forces on the Eastern Front (4 June-20 September 1916).
General Aleksei Brusilov led what is now known as the Brusilov offensive, most successful Russian military operation of World War 1, against Austro-Hungarian forces on the Eastern Front (June 4, 1916 – September 20, 1916).