Commanded by Gen. Stanisław Grzmot-Skotnicki, it was composed of one cavalry brigade and one brigade-strong reserve infantry detachment, as well as numerous smaller units.
# Operational Group "Czersk" (Grupa Operacyjna Czersk) under gen. Stanisław Grzmot-Skotnicki
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# Operational Group Grzmot-Skotnicki (Grupa Operacyjna Grzmot-Skotnicki) under Stanisław Grzmot-Skotnicki
During the Invasion of Poland of 1939 he commanded the Czersk Operational Group and was among the highest ranking Polish officers to be killed in action in that war.
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At the start of the Invasion of Poland in 1939, he commanded his unit as the core of the Czersk Operational Group which was to shield the Vistula river crossings against the German offensive and to protect the flanks of the Pomorze Army.
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 | Andrzej Stanisław Załuski |
First documented owner of the village was a nobleman named Piotr Bogoria Skotnicki (13th century), and across the centuries, Rytwiany belonged to a number of owners, including Cardinal Wojciech Jastrzębiec, Hieronymus Jaroslaw Łaski, the Lubomirski family, the Potocki family, the Radziwiłł family, and several others.