Complex sentence: On June 10,1940, the Gestapo took control of Terezín and set up the prison in the "Small Fortress" ("kleine Festung", the town citadel) and the first inmates arrived just a few days later on June 14.
Split into simpler sentences: On June 10,1940, the Gestapo took control of Terezín and set up the prison in the "Small Fortress" ("kleine Festung", the town citadel). The first inmates arrived just a few days later on June 14.