Convention of Klosterzeven

[1] It came in the wake of the Battle of Hastenbeck on 26 July in which Hanover had suffered a devastating defeat.

Following the battle the Army of Observation had retreated northwards until it had reached Stade.

After the Prussian victory at Rossbach on 5 November 1757, King George II was encouraged to disavow the treaty.

[2] Under pressure from Frederick the Great and William Pitt, the convention was subsequently revoked and Hanover re-entered the war the following year.

[3] The Duke of Cumberland, who had signed the agreement on behalf of Hanover, was disgraced when he returned to Britain, ending his previously distinguished military career.