Three episodes of this series (Dad's Army: The Loneliness of the Long Distance Walker (1969), Dad's Army: A Stripe for Frazer (1969) and Dad's Army: Under Fire (1969)) are no longer thought to exist (although the off-air soundtrack to one, Dad's Army: A Stripe for Frazer (1969), was recovered in 2008), after an archive purge at the BBC in the 1970s saw the destruction of the only known copies. Until recently, there were five missing episodes (all from the second season) before an appeal by the BBC called "Treasure Hunt" saw the return of two 16mm film recordings (Dad's Army: Operation Kilt (1969) and Dad's Army: The Battle of Godfrey's Cottage (1969)) taken from the original video tapes. These recordings had been dumped in a skip outside the Elstree Studios when they were found and taken home by one of the studio staff, 30 years before. After seeing the 'Treasure Hunt' appeal on TV in 2001, the prints were returned by a friend of the staff member, to whom the prints had been entrusted.