Walcheren Campaign: British landing and evacuation, July–December 1809

Background. Walcheren is a region in Zeeland at the mouth of the Scheldt estuary, strategically vital for accessing the port of Antwerp. In July 1809, the British decided to seal the Scheldt estuary to prevent Antwerp from being used as a base against them. Lord Castlereagh offered Lord Chatham command of an amphibious assault aimed at destroying French fleet and fortifications around Antwerp and Walcheren.

Landing and Initial Operations. A British expeditionary force of 39,000 troops, including field artillery and siege trains, crossed the North Sea and landed on Walcheren on 30 July 1809. The force was divided into three columns. The Schouwen Column landed at Wemeldinge on 1 August, taking the Bath fortification without a fight. However, a misunderstanding led the Cadzand Column to land on South Beveland, allowing French reinforcements to reach Flushing via a pontoon bridge.

Stalling and Sickness. Lord Chatham's decision to besiege Flushing for two weeks rather than advancing directly to Antwerp stalled the expedition, leaving a large force idle. The campaign involved little fighting but heavy losses from 'Walcheren Fever,' likely a combination of malaria, typhus, typhoid, and dysentery. The British army was stalled by Chatham's indecisive leadership and the arrival of French Marshal Bernadotte.

Withdrawal. With strategic reasons for the campaign gone and worsening conditions, the British withdrew in December. The survivors withdrew on 9 December. The British began a staged withdrawal to Walcheren. Despite the failure to capture Antwerp, Napoleon remained uneasy about the political situation in France.