Military leaders are still trying to gather statistics from the services that would shed light on the issue, including how many military members are disciplined, how many are kicked out of the military and how many recruits are turned away from any extremist ties.
It’s proving to be difficult. So far, NPR and other news organizations have been able to gather only a few statistics. The Marine Corps says in the last three years it found 16 cases of substantiated extremist behavior, mostly postings on social media. The Marines had no immediate information about whether any of them were kicked out.
The Army, meanwhile, told NPR to file a Freedom of Information Act request with the Army’s Criminal Investigation Command in order to get any information on extremist investigations.

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National Guard troops and Capitol Police stand guard at the U.S. Capitol on Monday, the day before Donald Trump’s second Senate impeachment trial is set to begin.
Little information
It’s unclear whether the military has carried out any surveys like the one conducted in 2019 by the independent Military Times newspaper.
Roughly one-third of active duty troops said they had “personally witnessed examples of white nationalism or ideological-driven racism within the ranks in recent months,” according to the survey by the Military Times and Syracuse University’s Institute for Veterans and Military Families. Troops said they had seen “swastikas being drawn on service members’ cars, tattoos affiliated with white supremacist groups, stickers supporting the Ku Klux Klan and Nazi-style salutes between individuals.”
Some conservative commentators have questioned whether Austin’s stand down is an anti-Trump exercise. But the Pentagon insists this is not about how a current or former service member voted, or what their political beliefs may be. Rather, it’s how they act on certain beliefs, including calls for violence.
Pentagon regulations from 2012, state that: “Military personnel must not actively advocate supremacist, extremist or criminal gang doctrine, ideology or causes, including those that advance, encourage or advocate the use of force, violence, or criminal activity or otherwise advance efforts to to deprive individuals of their civil rights.”
The regulations go on to say that military personnel “must reject active participation” in such groups, including “demonstrating and rallying; recruiting, training, organizing, or leading members; distributing material (including posting online); knowingly wearing gang colors or clothing; having tattoos or body markings associated with such gangs or organizations.”

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Troops stand in formation inside the Capitol Visitor’s Center to reinforce security at the Capitol in Washington, Wednesday, Jan. 13, 2021. The House of Representatives is pursuing an article of impeachment against President Donald Trump for his role in inciting an angry mob to storm the Capitol last week.
Debating the rules
Still, a service member can be a member of an organization such as the Proud Boys, just not an “active” one. That may be changing, says Pentagon spokesman John Kirby.
“Membership is not considered inconsistent with service in the military,” Kirby told reporters recently, “and it really is about what you do with that membership. I’m not going to be predictive one way or the other about where this discussion is going, but I think membership in these groups is something I would expect (Pentagon officials) to look at.”
Pentagon officials privately concede they will have to tackle some thorny issues. Confederate flags are now banned. But what about a patch from a far-right group or a bumper sticker that supports the conspiracy theories of QAnon?
Indeed, what about soldier wearing a T-shirt reading, “Stop the Steal?” The argument could be made that that solider is saying the election was a fraud and therefore his commander-in-chief is illegitimate. That could be illegal under military law, which prohibits “contempt toward officials.”
Austin sat down with the Joint Chiefs of Staff last week and asked for their ideas. Some suggested an education campaign for recruits that talks about extremism. Another idea is to counsel service members before they leave active duty: Be aware extremist groups may be looking to recruit you.