02/11/2026
A new month means a new letter! November brings us the letter O for... Observer Corps
Stationed in the cabins at the Battle of Britain Bunker, overlooking the Plotting Room, was an Observer Corps (OC) liaison. The OC were crucial to the air defence of Britain during the Battle of Britain and were known as the eyes and ears on the ground for the RAF.
A volunteer force, they were positioned on hills and roofs of buildings and were equipped with a tin hat, binoculars, and a post instrument, looking into the sky. The OC would provide information on incoming enemy aircraft including height, size of raid, and location. Using their aircraft identification skills, they could also identify the type of aircraft (fighter or bomber). This information would prove crucial to the decisions made at Uxbridge to send RAF fighters up to intercept the enemy.
A year after the Battle of Britain, the OC became the Royal Observer Corps. Their contribution was crucial throughout the rest of the Second World War. They continued to operate beyond this period, throughout the Cold War, before being stood down in 1995.
📸 Post instrument on display in Visitor Centre (ROCA)
To discover more about the volunteer force who helped to defend British skies, come and visit us! More info here: https://buff.ly/ff2upAt