Invicta Military-Vehicle Preservation Society Ltd (IMPS) is a company limited by guarantee. It is a club whose members restore and maintain ex-military vehicles of all types and ages. The club publishes a monthly newsletter and quarterly magazine 'Imprint'. Members participate in area events run by local representatives and the annual Combined Operations show at Headcorn. The club also organises excursions to sites of interest, annual trips to the Pas de Calais, and a week-long visit to Normandy every 5th year for the anniversary of D-Day.