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.
FSG Facebook page at: www.facebook.com/Fortressstudygroup
FSG Forum at: www.fsgfort.com/FSGforum/
FSG Twitter page at: https://twitter.com/fortsgroup
Latest updates: 2015 accounts and AGM minutes added to member's section.