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It is the 13th year of the show which is taking place this weekend at the Kent County Showground at Detling, near Maidstone.
Visitors can enjoy watching battle re-enactments and living history displays from the ancient world of the Greeks to the present day.
This year will see an extensive Vietnam War display with daily re-enactments featuring artillery fire and pyrotechnics.
Elsewhere, the Spitfire will be making a welcome return to take part in a massive Second World War battle, while the First World War Experience will have new trench system and daily combat zone.
And every day visitors can watch colourful groups of English Civil War re-enactors and American Civil War groups fighting it out with their cannons.
There will also be exhibits of restored military vehicles and indoor and outdoor collector markets with hundreds of stalls.
Military Odyssey is open from 9.30am to 6pm on Saturday, August 24 and Bank Holiday Monday.
One day tickets are £16.50 for adults, £10 for children aged five to 15, £13 for senior citizens and £48 for a family. Three day tickets are £44.50 for adults, £27 for children, £36.50 for senior citizens and £130 for a family.
Camping is available priced £44.50 per pitch.
Call 01266 772448 or see www.military-odyssey.com