On land the Western Front is still stalemated. At sea Britain remains dominant, its mighty fleet forcing Germany’s main battle fleet to remain in port. Germany is under blockade and its economy is being slowly strangled. Yet the British do not have it all their own way. German U-boats are striking back against Allied merchant shipping, hoping to starve Britain into submission. Another threat to the British is the German naval bases at Ostend and Zeebrugge in Belgium. German warships operating from here are able to disrupt Allied shipping in the Channel.
Jellicoe, now the head of Britain’s navy, is increasingly preoccupied with the threat posed by these German naval bases. Today he presents a memorandum to the war cabinet warning that Britain is heading for disaster unless these ports are neutralised. Not merely is he concerned about the disruption of Allied shipping in the Channel, he also fears the prospect of these bases being used for an attack on England itself.
Robertson, the British army’s chief of staff, passes on Jellicoe’s concerns to Haig. Haig begins to think about staging an offensive in Flanders, a Third Battle of Ypres, with the capture of the Channel ports as the ultimate goal.