 Complete the following phrase:  He took part in the First World War, first in the Austro-Hungarian army, and after May 1915 as an officer in the Polish Legion. He commanded a regiment in the PolishSoviet War of 1919-21. In 1925 he completed studies at a French military school in Paris and became the commander of the Supreme Military School in Warsaw. After Jozef Pilsudskis 