Cahterize Zeta-Jones stars as journalist Rose Winters in the movie version of the BBC's classic sitcom.
In the trailer, Rose Winters raises eyebrows and causes a whip after she went to the story bound city of Walmington-on Sea.
"Associated Press. I'm doing an article on the Home Guard, and you come highly recommended," Winters tells Toby Jones role as Captain Mainwaring.
The journalist is spotted drinking tea with Mainwaring, gratifying him with the words: "You remind me of someone... Winston Churchill!'
Mainwaring agrees, adding: "I'd like to think that if we met, we'd both be the richer for it."
The film will be released in February 2016 and as the trailer opens, the Home Guard is marching through the city decorated with decorations and flags.
Sherlock co-creator Mark Gatiss's Colonel Theakes report to Mainwaring about "an enemy spy operating in the area."
Mainwaring can hardly control his excitement: "This is it men, our chance to play a real part in this war," he tells his troop.
The cast of the movie is listed as Michael Gambon as Private Godfrey, Tom Courtenay as Lance-Corporal Jack Jones, Bill Paterson as Private Fraser and Mrs Biggs star Daniel Mays as Private Joe Walker.
The movie, which observes the bumbling Home Guard hunt down an opponent spy with a little help from alluring Winters, will be in cinemas almost 50 years subsequent to the classic TV sequence first aired in 1968.
Just like the Second World War set in 1944 when the war is coming to an end, the trailer also contained a nick of the men stumbling ahead a bull, comic army military exercises, an outburst and the classic line: "Don't panic!"
At its summit, Dad's Army ruled the audiences of almost 20 million spectators. It is still averaging very solid viewing statistics of nearly two million with its most recent replay on BBC Two.
Enormous expectation environs this big-screen version thanks to its first-rate cast.