Please send an e-mail with the following information to J. E. Kaufmann if you want to apply for membership.  

First name:
Last name:
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If you have published any material on fortifications, artillery or castles. Please list some of those items.
If you have a related website, please list it.
Extra information related to your application.

If you are a member and want to report changes to your membership, please fill in the information.

E-mail address to send application to:

By sending the e-mail you agree to have your name published on the Internet as a member of SITE O

We have been forced to remove the application form used before due to technical problems with spam.