Wilson was promoted to
admiral of the Fleet on 1 March 1907 and, after three years in retirement, became
First Sea Lord in January 1910. In this role he was, according to
Hew Strachan, "abrasive, inarticulate, and autocratic" and was really only selected as Admiral
John Fisher's successor because he was a supporter of Fisher's reforms. Wilson gave a poor account of himself at the
Committee of Imperial Defence meeting after the
Agadir Crisis, at which he said that in the event of war the Navy planned to land the Army on the Baltic Coast, an old plan of the recently retired Admiral Fisher, apparently derived from the
Seven Years' War of the mid eighteenth century. According to the memoirs of
Lord Haldane, Field Marshal
William Nicholson (
Chief of the Imperial General Staff), asked Admiral Wilson whether the Admiralty had maps of German strategic railways (to show how the Germans could rush reinforcements to invasion spots), and when Wilson said it was not the Admiralty's business to have such maps, Nicholson openly rebuked him and said that if the Navy "meddled" in military matters they needed not just to have such maps but to have studied them. The meeting was carried by a lucid presentation by Brigadier-General
Henry Wilson, and Prime Minister
H. H. Asquith (who thought the Royal Navy plan "puerile and wholly impracticable") ordered the Navy to fall in with the Army's plans to deploy an Expeditionary Force to France. After the meeting Churchill was appointed First Lord of the Admiralty and began setting up a Naval Staff (
Admiral Fisher having been opposed to setting one up), whilst
Maurice Hankey began to draw up the War Book detailing mobilisation plans. Wilson survived for even less time than was intended by the stop-gap nature of his appointment because of his opposition to the establishment of a Naval Staff. In the opinion of historian Hew Strachan: "the combination of frequent change and weak appointees (Wilson,
Bridgeman and
Battenberg) ensured that the professional leadership of the Royal Navy lost its direction in the four years preceding the war". He was recalled by Winston Churchill in 1914 at the outbreak of the
First World War to provide advice on strategy. He ceased his role as an advisor in November 1918 and inherited a
baronetcy from his brother in October 1919. He died, unmarried, in
Swaffham on 25 May 1921 and is buried in the churchyard of St Peter and St Paul's Church. His VC was donated to the
Royal Naval Museum,
Portsmouth. ==Nicknames==