Mil.com
Mil.com (or Military.com to give its correct name) is a huge American Forces' website with over 10 million registered users. It caters for both serving and retired members of all their services (including the Coastguard) and sponsors all kinds of initiatives for its members.
However...
It is also the haunt of suprising numbers of ignorant rednecks who think Islam is a place in the Middle East and all problems can be solved kinetically.
In a nutshell, they are right, you are wrong, disagree and you're banned. This can be kind of fun if you have time to burn and want to expend some energy baiting Americans.