<prompt> Bhala okuqhubekayo kwalesi sigaba - Phakathi nokuhlasela kwamaNazi eMpini Yezwe II, iFort VII yaduma njengekamu lokuhlushwa lamaNazi, lapho kwafa khona abantu basePoland abangaba ngu-20 000. Phakathi kuka-1940 no-1945, iFort Grolman neFort Rauch kwakha i-nucleus yekamu laseStalag XXI-D leziboshwa zempi. Engxenyeni yokugcina yempi, iPoznań yabizwa ngomunye wemizi eyisiphephelo Festungen amaNazi ayehlose ukuyivikela ngazo zonke izindlela, ngakho igama elithi Festung Posen lavuselelwa. Izinqaba zangaphandle zazisetshenziselwa ukuvikela idolobha ngesikhathi seMpi yasePoznań 1945  <response>: , futhi iFort Winiary kwakuyindawo yokugcina abavikeli ababephikisa kuyo, okwenza umonakalo omkhulu. Ngemva kwempi indawo yaseFort Winiary yaguqulwa yaba ipaki iCytadela. 