Twitter has erupted after Donald Trump’s #MakeAmericaGreatAgain tweet featured a picture of the Presidential hopeful, the american flag, some US$100 bills and a photo of Nazi SS soldiers.

In the bottom right hand corner, there is a photo of soldiers who are actually men dressed as the Waffen-SS, the notorious military wing of the Nazi SS.

The original photo can be found on photo site iStock. The image was taken at a World War II reenactment near Kent, England.

John Schindler, a former national security affairs professor at the US Naval War College, took to Twitter to complain about the tweet:

100% certain Waffen-SS ID on the Trump pic….if media want an explainer how I am certain, ask me https://t.co/b3pwWmdwHY

— John Schindler (@20committee) July 14, 2015

.@charles_gaba @MichaelNiemerg @realDonaldTrump they’re wearing Waffen-SS cuff titles, FFS…dude on left has late-war SS “dot” camo uniform

— John Schindler (@20committee) July 14, 2015

Notice the late-war Waffen-SS “dot” camo tunic, with SS eagle on left arm as in the Trump pic https://t.co/b3pwWmdwHY pic.twitter.com/ulScwicbZU

— John Schindler (@20committee) July 14, 2015

See also Waffen-SS tunic with unit cuff title & SS eagle on left arm, as in Trump pic https://t.co/b3pwWmdwHY pic.twitter.com/IdQlwcIebJ

— John Schindler (@20committee) July 14, 2015

A Trump campaign spokesperson blamed the whoopsie on an intern: “Mr Trump has been in Charlottesville, Virginia all day at the opening of a development. A young intern created and posted the image and did not see the very faded figures within the flag of the stock photo.

“The intern apologised and immediately deleted the tweet.”