Anstruther is a coastal town in Fife, Scotland, situated on the north-shore of the Firth of Forth and 9 mi (14 km) south-southeast of St Andrews. The town comprises two settlements, Anstruther Easter and Anstruther Wester, which are divided by a stream, the Dreel Burn. With a population of 3,500, it is the largest community on the Firth of Forth's north-shore coastline known as the East Neuk. To the east, it merges with the village of Cellardyke.

The Royal Observer Corps (ROC) was a civil defence organisation intended for the visual detection, identification, tracking and reporting of aircraft over Great Britain. It operated in the United Kingdom between 29 October 1925 and 31 December 1995, when the Corps' civilian volunteers were stood down. Composed mainly of civilian spare-time volunteers, ROC personnel wore a Royal Air Force (RAF) style uniform and latterly came under the administrative control of RAF Strike Command and the operational control of the Home Office. Civilian volunteers were trained and administered by a small cadre of professional full-time officers under the command of the Commandant Royal Observer Corps; latterly a serving RAF Air Commodore.