These pages will catalogue the official reports of the most important event in Royal Air Force history, the Battle fought over Britain between the 10th July and 31st October 1940. For the first time, the complete Fighter Command Operational Diaries for the period have been published in full, day by day over the whole period the Battle. Supporting this official text are a series of pages detailing such facets of the Battle as the Commanders, the Aircraft and the changes in Tactics on both sides as the situation developed.