Mackiewicz joined the Polish Military Organisation in 1917 and served as a volunteer in the Polish Army during the Polish-Soviet War of 1919–21.
Stanisław August Poniatowski | Stanisław Lem | Stanisław Ignacy Witkiewicz | Stanisław Jerzy Lec | Stanisław Skrowaczewski | Stanisław Wyspiański | Stanisław Poniatowski | Stanisław Moniuszko | Stanisław Bułak-Bałachowicz | Stanisław Staszic | Stanisław Potocki | Stanisław Ossowski | Stanisław Szczęsny Potocki | Stanisław Mikołajczyk | Stanisław Maczek | Stanisław Leszczyński | Stanisław Kulczyński | Stanisław Kostka | Stanisław Grzmot-Skotnicki | Stanisław Baran | Jan Stanisław Bystroń | Stanisław Witkiewicz | Stanisław Tymiński | Stanisław Tatar | Stanisław Przybyszewski | Stanisław Lubomirski (1704–1793) | Stanisław Lubomirski | Stanisław Grabski | Stanisław Chlebowski | Józef Mackiewicz |