A group of Army officers were advised to monitor soldiers who belong to what they considered to be anti-gay, anti-Muslim and anti-immigration organizations, according to a military email obtained by Fox News.

The email was sent by a lieutenant colonel at Fort Campbell in Kentucky to three dozen subordinates – warning them to be on the lookout for any soldiers who might be members of "domestic hate groups."

Among the groups the Army listed as "domestic hate groups" are well-respected organizations the Family Research Council, American Family Association, Atlas Shrugs and the Federation for American Immigration Reform. The Army listed the groups alongside actual extremist and hate groups like the Neo-Nazis, the Ku Klux Klan and other supremacist groups.

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