The author describes military events which affected Hlohovec in the period between the beginning of the 15th century and the first half of the 17th century. Furthermore, there are mentioned the impacts of military invasions and looting, such as the phenomenon of outlaws, moss-troopers and the declining number of inhabitants. The study also notices the discontent of some noblemen and tycoons with the reign of Sigismund of Luxembourg in the years 1401 – 1403. As in the period Hlohovec castle was conquered twice, the author presents the most common techniques of fortress conquering at the end of the 14th century and the 1st half of the 15th century. Other military events affected Hlohovec during the period of the Hussites invasions in 1430 – 1431. The study also refers to the period of the activities of the Bratríci armies in the area of south-western Slovakia, especially in Svätý Peter (at present a part of Hlohovec) and Veľké Kostoľany. An important part of the study is the Turkish invasion in the area of Hlohovec and the resistance to the Habsburgs in context with the history of Hlohovec. Finally, the study describes the appearance of Hlohovec castle in the period between the beginning of the 15th century to the first half of 17th century, based on written and archaeological sources.