Promoted to colonel on December 25, 1899, Tretyakov was with the Russian expeditionary forces in the Boxer Rebellion in northern China.
Nikolai Gogol | Nikolai Rimsky-Korsakov | Tretyakov Gallery | Nikolai Yudenich | Nikolai Bulganin | Nikolai Timkov | Nikolai Leskov | Nikolai Rubinstein | Nikolai Bukharin | Nikolai Volkoff | Nikolai Fraiture | Nikolai Rakov | Nikolai Pozdneev | Nikolai Eilertsen | Nikolai Berdyaev | Nikolai Ryzhkov | Nikolai Krylenko | Nikolai Glushkov | Nikolai Erdman | Henrik Nikolai Krøyer | Sergei Tretyakov | Russian battleship Imperator Nikolai I | Pavel Tretyakov | Nikolai Vavilov | Nikolai Sokoloff | Nikolai Semenovich Kurnakov | Nikolai Roslavets | Nikolai Ostrovsky | Nikolai Myaskovsky | Nikolai Medtner |