People were transported back in time on the second Desborough in the 1940s day.
The whole operation began at midday with an air raid warning siren.
Desborough Town Centre Partnership secretary Pamela Goodman said: “Some of the stalls, the Heritage Centre and the Harborough Ukulele Band were in full swing as people began to arrive.
“Not only did the band play, but they also gave dancing lessons, much to the delight of those brave enough to try!
“The heritage centre was serving jam or spam sandwiches, home made soup and cakes made with wartime recipes.
“Pathe News was playing all through the day and train lovers had a treat in the heritage centre, where a 1938 train set was being run to the delight of boys, old and young!”
There was a vintage and craft fair at the Ritz, which was also the venue for singer Pete Wayre.
Other attractions includced a cavalcade of vehicles and street stalls.
Pamela said: “Most of the retailers had taped their windows to give some authenticity and they reported brisk trade all through the day.
“We had two sentry boxes at each end of Station Road kindly made by Albany Sheds and also a marvellous mural of a bombed street scene.
“So many people joined in and dressed for the era.
“Children from Loatlands and Havelock Schools had provided entertainment which was hugely enjoyed.
“Due to poor weather and low cloud at the beginning of the day we nearly lost our ‘fly past’.
“However, at 3.30 pm four planes from The Blades at Sywell went over.
“On top of all this on the street – in the evening the Ritz hosted a dinner & dance.”