But the men and women in military dress were not members of the armed forces. They were extras from the new Dad’s Army film.
The Leeds actors, who play members of the movie’s Home Guard Unit, performed drills outside the Showcase Cinema on Gelderd Road.
They appeared in full costume as they paraded to fans outside, before marching into the cinema with popcorn in hand.
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Mark Barlow, general manager of UK Theatres at Showcase Cinemas said: “In advance of the release of Dad’s Army, we were delighted to invite the WR28 Home Guard unit to the Showcase Cinema de Lux in Birstall.
“Appearing in their full uniform, they put on a great display for guests by performing various drills both inside and outside the cinema. As they are extras in the film and local to the cinema, it was fantastic to have them here to bring Dad’s Army to life.”
The new film is based on the BBC Sitcom set during the Second World War.
Mirfield brothers Alex and Ben Williams are among its all-star cast, which includes Catherine Zeta-Jones, Toby Jones and Bill Nighy.
Ben appears as a rascal-like runner for the character of spiv Private Joe Walker while Alex plays a scamp, going about his mischief.
Dad’s Army will be screened at Showcase Cinema de Lux from Friday.
For more information and to book tickets, visit www.showcasecinemas.co.uk