The Global Defense Initiative (GDI) is an open organization dedicated to the protection of our members. As a member of GDI, you will receive the protection of GDI forces. No country more than twice your size or less than half your size will be able to go to attack you without first formally declaring war. On this server, GDI protection is """"free"""" and required.

Not free, unless bonus points are used. Under the server details it states its $3 per acre.