Aktion Gitter (cs|Akce Mříže) was the March 1939 arrest of thousands of anti-Nazi activists by the Gestapo in the Protectorate of Bohemia and Moravia based on lists that had been drawn up before the occupation by the Czechoslovak police.
Sources
Web site: Stolina . Radim . Počátek okupace v Táboře . Husitské muzeum v Táboře . 17 February 2020 . cs.