Netflix sparked controversy after eagle-eyed military viewers noticed that Olivia Colman's greeting was "limp" in the trailer for The Crown season.
In the trailer for the fourth season of the hit show, the Queen greeted the Red Arrows at Buckingham Palace in London.
But General Lord Dannatt, former Chief of the Army, said The Times Colman's "slack wrist" would "drive any confident sergeant major crazy".
He added, "Of course, these television studios should bring in a sergeant major or other military instructor to make sure the actors learn to keep their wrists straight."
Colonel Richard Kemp, former commander of the British forces in Afghanistan, agreed. He said the Queen had always offered a "stiff and straight greeting" after years of experience.
In the trailer for the fourth season of the hit show, the Queen greeted the Red Arrows at Buckingham Palace in London
Timothy Brown, who is in the 4th/7. Royal Dragoon Guards wrote a letter to the newspaper to complain that even Colman's aiguillettes were worn incorrectly.
He said the thin cord under the arm should actually be looped over the two thin cords in the front.
Netflix declined to comment when MailOnline approached him.
It comes after The Crown stars including Emma Corrin, Gillian Anderson and Helena Bonham Carter shared their thoughts on the show's fourth season in a behind-the-scenes teaser.
The last season of the show, which starts on Sunday on Netflix, is described in the video by series director Benjamin Caron as the best season so far.
Colonel Richard Kemp, ex-commander of the British forces in Afghanistan, said the queen had always offered a "stiff and straight greeting" after years of experience
It's meant to tell the story of the royal family back in the 1980s when two famous personalities – PM Margaret Thatcher (Gillian Anderson) and Princess Diana (Emma Corrin) – disrupted the solid and stoic status quo.
The teaser also features footage of the show's immense behind-the-scenes operation, which allegedly costs Netflix north of $ 100 million per season.
Other footage in the video shows Prince Charles fighting the Queen, the Queen chatting with Prime Minister Margaret Thatcher, and Princess Diana and Prince Charles dancing together in a ballroom.
The design of the show looks as lush as the viewers got used to in the first three series. The queen is shown several times in all her red and gold splendor and numerous scenes take place in her various palaces.
The 24-year-old newcomer Emma Corrin describes her role in the new season as follows: "We met Diana at the age of 16 and followed her until she was 28.
Fresh face: The 24-year-old newcomer Emma Corrin describes her role in the new season as follows: "We meet Diana at the age of 16 and follow her until she is 28".
"It explores everything from her marriage to her finding her voice and who she is."
Describing her part from Margaret Thatcher, Gillian Anderson, 52, suggested a frosty relationship with the Queen.
Adds to their relationship, Olivia Colman, 46, who plays the queen, "They think this is sure to work very well – and it doesn't."
"It's not the beautiful friendship that the Queen hopes will be."
Colman added that she found aspects of season four more difficult, revealing, "The more modern it is, the more we get into people's emotions – and I find that a little difficult."
Stars of The Crown have shared their thoughts on the show's fourth season in a compelling new behind-the-scenes teaser
Writer Peter Morgan says of his trial, "You are desperately trying to be honest about what you write about, but in fact, you are so burdened with what you know it happened."
28-year-old Princess Anne actress Erin Doherty suggests the show is popular because it shows the human face behind the royal family.
She says, "This show is so special because it goes – no, they have a beating heart, check it out."
Peter Morgan, the writer behind The Crown, describes the genesis behind the creation of the show: "You are desperate to be honest about what you write about, but in fact you are so burdened with what you know what happened."
"I'm only there to try to tell the story of what happened in this family towards the second half of the 20th century.
"And I did my best every time and then you have to surrender and step back – it will mean different things to different people."
Emma Corrin announced that she had asked screenwriters to add graphic scenes of bulimia to portray the People's Princess' struggle against the eating disorder
And Helena Bonham Carter is full of praise for Peter's work and says: "The gift of this job is Peter's writing – are there so many colors and facets in this family?" Basically, it's never boring. "
Adding executive producer Suzanne Mackie that Diana and Thatcher are at the center of the show, she says, “Peter knew we were going to get into that era – these two immensely iconic women.
“The queen is our protagonist, you are too far removed from her at your risk. You have to keep bringing it back to The Crown. & # 39;
Earlier this week, Emma Corrin announced that she had asked screenwriters to add graphic scenes of bulimia to portray the People's Princess' struggle against the eating disorder.
Speaking to the Radio Times, the movie star said she wanted to record scenes of Diana vomiting to portray the eating disorder in an "honest way".
The teaser also features footage of the show's immense behind-the-scenes operation, which allegedly costs Netflix north of $ 100 million per season
The fourth season of the show is described in the video by series director Benjamin Caron as the best season so far
About the scenes Emma had developed with her exercise trainer, she said, "We had worked on her body language and put together a document that we had sent to the script team and said," Can you record any of this? The writing, because we would really like to work these scenes out? "
“I felt if we try to portray bulimia in an honest way, we actually have to show it – otherwise it's a disservice to anyone who has been through this.
“I don't think we should shy away from these talks. Diana was very open about her experience with bulimia and I admire it so much. & # 39;
Diana herself first revealed her fight against bulimia during her bombshell panorama interview with Martin Bashir in 1995.
The Cambridge alum said it was referring to the pressures placed on young women to be "thin and glamorous" and that social media gave people more importance to "be a certain way".
The fourth Crown series will be released on Netflix on Sunday November 15th.
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