The service will be held in London, but other cities, such as Coventry, were also targeted in the Blitz A remembrance service will be held later to mark the 70th anniversary of the start of the Blitz.
Hundreds of people across the UK were killed and injured in the series of co-ordinated air attacks by Hitler’s forces.
The City of London Salute at St Paul’s Cathedral, London, will celebrate those who worked to protect Britons, such as pilots, firefighters and nurses.
Nearly 1,000 German planes crossed the channel on 7 September 1940.
More than 400 people were killed on the first day alone. Hundreds more were injured and huge fires burned across London.
The date of 7 September has been chosen for the commemoration as it is exactly 70 years to the day since Hitler’s war offensive switched from military targets to the bombing of cities and industrial centres.
The event is being organised jointly by the lord mayor of the City of London and the RAF Association.
It is intended to recognise the effort of everyone directly involved in the Battle of Britain and the Blitz.
Those attending will include people who worked as firefighters, nurses, ambulance workers, as well as those who were children at the time, Battle of Britain pilots and other military personnel.
Organisers have encouraged Londoners and tourists to turn out to support WWII veterans and current military personnel, who will hold a march-past through the City after the service.
A WWII Spitfire, Lancaster and Dakota will fly overhead at the same time.
This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.