The first part of Prince Harry and Meghan Markle's docu-series is out now on Netflix, providing viewers with an insight into the former royal's life.
While the first three episodes of Harry & Meghan focused on the media, press intrusion and family life, Prince Harry is featured discussing something that he certainly regrets.
The incident happened in 2005 when the Duke of Sussex was just 20 years old, in what he describes as one of the 'biggest mistakes' of his life.
17 years ago, Harry was pictured wearing a mock uniform that embodied the Nazi's swastika on his arm and the German Wehrmacht badge on his collar.
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The prince wore the Nazi uniform to a 'native and colonial' party thrown by the now late Olympic equestrian Richard Meade.
But the image of the Harry's outfit went viral, with the photograph of him wearing it making global headlines.
It started with Harry being featured on the front page of The Sun newspaper wearing the outfit in January 2005.
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Harry discussed the scandal during the third episode of the Netflix series, showing his deep regret over the incident.
He said that he met with the late Chief Rabbi Jonanthan Sacks and also spoke to a Holocaust survivor to repair the damage.
In the series, Harry said: "It was one of the biggest mistakes of my life. I felt so ashamed afterwards.
"All I wanted to do was make it right. I sat down and spoke to the Chief Rabbi in London, which had a profound impact on me.
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"I went to Berlin and spoke to a holocaust survivor. I could have got on and ignored it and made the same mistakes over and over in my life, but I learnt from that."
Harry received a lot of criticism at the time, with the Board of Deputies of British Jews releasing a statement.
Back in 2005, they said: "It's not a joke to dress up as a Nazi, especially as we come up to the 60th anniversary of the liberation of Auschwitz.
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"It is important that everybody remembers the evil that the Nazis were responsible for."
Harry also issued an apology at the time of The Sun's story, he said: "I am very sorry if I have caused any offence or embarrassment to anyone. It was a poor choice of costume and I apologise."
The final three episodes of Harry & Meghan launch next Thursday, 15 December.
Topics: Prince Harry, Netflix
Callum Jones