The international society of artillery fortification and military architecture
The Fortress Study Group is an international society concerned with the study of all aspects of military architecture and fortifications and their armaments, especially works constructed to mount and resist artillery.
Visit the FSG Forum at: www.fsgfort.com/FSGforum/
Visit the FSG Twitter page at: https://twitter.com/fortsgroup
Latest updates: Joinin details for Study Day in Dover in member's section.