From 1904 to 1907, Boris Pasternak was the cloister-mate of Peter Minchakievich (1890–1963) in Holy Dormition Pochayiv Lavra, located in West Ukraine. Minchakievich came from an Orthodox Ukrainian family and Pasternak came from a Jewish family. Some confusion has arisen as to Pasternak attending a military academy in his boyhood years. The uniforms of their monastery Cadet Corp were only similar to those of The Czar Alexander the Third Military Academy, as Pasternak and Minchakievich never attended any military academy. Most schools used a distinctive military looking uniform particular to them as was the custom of the time in Eastern Europe and Russia. Boyhood friends, they parted in 1908, friendly but with different politics, never to see each other again. Pasternak went to the Moscow Conservatory to study music (later Germany to study philosophy), and Minchakievich went to L'viv University (L'vov, L'wow) to study history and philosophy. The good dimension of the character Strelnikov in Dr. Zhivago is based upon Peter Minchakievich. Several of Pasternak's characters are composites. After World War One and the Revolution, fighting for the Provisional or Republican government under Kerensky, and then escaping a Communist jail and execution, Minchakievich trekked across Siberia in 1917 and became an American citizen. Pasternak stayed in Russia.