Tomasz Idzikowski Author

J. E. Kaufmann is a freelance researcher and a retired public school teacher. He has published several books on fortifications and is the founder of Site O, an international group devoted to the study of fortifications. His numerous articles have appeared in Military Affairs, Fort: the International Journal of Fortification and Military Architecture, and Strategy and Tactics.

H. W. Kaufmann is an instructor in the Romance Language Department at San Antonio College. She has a PhD in Medieval Spanish, and is fluent in French, Spanish, Italian, Polish, and Amharic. She is the co-author of numerous books on fortifications and has translated articles on fortifications for foreign-language magazines.

Tomasz Idzikowski is a professional artist.