Dear Mr. Andreev,
Thank you for posting your request on History Hub!
For Czech military information, please contact the Military Central Archives (Vojensky ustredni archiv). For German military information, please contact the Bundesarchiv Abt. VI - Militärarchiv, Wiesentalstraße 10, 79115 Freiburg, Germany. For tanks specific information, we suggest that you contact the Military Technical Museum Lešany and the German Tank Museum (Deutsches Panzermuseum Munster).
We hope this information is helpful. Best of luck with your research!