Hello all, I would recommend registering at
http://www.militarygamers.com if you're current or former US Military.
Otherwise we operate
http://www.silversunrepublic.com as a supporters, family, friends and foreign allies community.
We used to integrate foreign allies in with MilitaryGamers.com, but we don't have a consolidated way to verify military service of foreign allies. If we did ask for formal ID then we'd have to maintain additional legal/privacy measures that we can't really justify keeping around for the small percentage of members we pick up from foreign allies.
I personally run Silver Sun Republic and I am Active Duty US Air Force and an officer/staff member of MilitaryGamers.com so we maintain a strong connection between the communities and actually share a TeamSpeak 3.
For various reasons we maintain the US Military niche at MiltaryGamers.com to include working with the gaming industry and because there are a lot of faker communities that claim to have full military membership bases only to turn out to be about 75% civilian.