Rear Admiral Ivan Konstantinovich Grigorovich (Иван Константинович Григорович; 26 January 1853 – 3 March 1930) served as Imperial Russia's last Naval Minister from 1911 until the onset of the 1917 revolution.
Staff Captain Nolle Alexander Mikhailovich /Нолле Александр Михайлович/. He is also wearing badge the completion of the Konstantinovsky Artillery School and badge in memory of the 50-year status of Grand Duke Mikhail Nikolaevich in the position of Feldzeichmeister General.