- Learned to fly with the Czarist Russian air force.
- After the Russian Revolution, he continued to fly, but now for the Bolsheviks.
- July 17, 1919 - While serving with the Red 15th Army, 45th Squadron (stationed in Soviet-occupied Rezekne), defected to the Latvian forces, bringing with him Sopwith Strutter #7046.
- Autumn 1919 - a member of the search task force created to find and evaluate military aviation materials abandoned by the
Germans and russians. Rank: Lieutenant
- November 4, 1919 - Crashes Sopwith Strutter # 7046.
- November 29, 1919 - involved in a ground accident in Sopwith Strutter # 7046 at Spilve.
- March 5, 1920 - conducts a reconnaissance flight of the area around Daugavgriva.
- March 10, 1920 - on the roster of the 3rd Squadron.
- April 1920 - a member of the commission examining P.Abram's fatal crash of April 25, 1920.
- August 7, 1921 - participates in the Aviation Festival at Riga/Spilve.
- 1923 - the Aviation Park receives new Ansaldo aircraft, and Mardoks is one of a handful of pilots considered qualified to fly the new machines.
- August 26-30, 1924 - participates in the first Latvian goodwill flight (to Tallinn, Estonia).
- 1926 - test flies and approves Sopwith Strutter #13 after it undergoes a major rebuild.
- A member of the Aizsargu Aviacija
- June 5, 1932 - participates in the Aviation Festival at Riga/Spilve.
- 1941 (Soviet Occupation) - the Soviets arrest and murder a number of those aviators who had defected to Latvia 20 years earlier. Mardok's fate is not known.
- Aviacijas Svetki (1932) Programma, pg.9
- Briedis, E. Latviesa Stasts, pg. 81
- Bruvelis, E. Latvijas Aviacijas Vesture
- Sparnota Latvija, No.24 (Jun 1936) pg.719, 747
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