Walmer Castle against Charles' brother, King James II, the townsfolk of Deal seized Walmer Castle on behalf of William III, the Prince of Orange. By the end of the century, however, the castle was increasingly regarded as out of date from a military perspective. In the 18th century, Walmer Castle became the official residence of the Lord Warden of the Cinque Ports. The Lord Warden was originally a medieval title linked to five key ports along the coast of England; the position's prominence had faded, but it still retained important judicial and military functions. When Lionel Sackville, the Duke of Dorset, was
1st Cinque Ports Artillery Volunteers 235th Batteries to form a new 89th (Cinque Ports) AA Regiment. The second-in-command, Major N.V. Sadler, was prompted to command the 75th AA Rgt and a new battery was raised at Ashford to give the following organisation: 75th (Home Counties) (Cinque Ports) AA Regiment Both new regiments were under the command of 28th (Thames & Medway) AA Brigade in 6th AA Division of Anti-Aircraft Command. In June 1939, as the international situation worsened, a partial mobilisation of the TA was begun in a process known as 'couverture', whereby each AA unit did a month's tour of duty in rotation to