Fisher recommended Louis as
First Sea Lord in 1911: "He is the most capable administrator in the Admirals List
by a long way", but elements of the British press were against his appointment on the grounds that he was a German.
Horatio Bottomley said it was "a crime against our Empire to trust our secrets of National Defence to any alien-born official". In December 1911, Louis did return to the
Admiralty but as
Second rather than First Sea Lord. As Second Sea Lord, Louis pushed through improvements in working conditions for the ratings, and created an
Admiralty War Staff that would prepare the navy's plans in case of war. He was promoted to full
admiral on 13 July 1912. , 1910 However, almost a year to the day later, on 8 December 1912, Battenberg assumed the post of First Sea Lord in succession to Admiral Sir
Francis Bridgeman. Military historian
Hew Strachan contends that Battenberg "lacked Fisher's dogmatism. Not the least of his attractions to Churchill was his malleability. The combination of frequent change and weak appointees ensured that the professional leadership of the Royal Navy lost its direction in the four years preceding the war. Power now lay with the service's civilian head ... Winston Churchill." Late in 1913 Battenberg (according to draft notes in Churchill's papers) gave what historian Nicholas Lambert describes as "uncharacteristically fierce resistance" to Churchill's suggestion of appointing his former superior Reginald Custance to the post of Chief of Naval War Staff (
Doveton Sturdee was appointed instead).
Jack Sandars,
Arthur Balfour’s former political secretary, at one point recorded that his many sources at the Admiralty complained of Battenberg’s subservience to Churchill and that his nickname was "Quite Concur" after the words which he often wrote on Churchill’s memos. On the eve of the World War, Churchill and Battenberg made the crucial decision to cancel the scheduled dispersal of the British fleet following practice manoeuvres, to preserve the Royal Navy's battle readiness. In the view of
Andrew Lambert, "While Churchill planned to recall Fisher if war broke out, he missed the chance to prevent war that might have been provided by drafting him earlier. No
Cabinet advised by Fisher would have made such a blundering, incompetent, disastrous response to the
July Crisis. The British trumpet gave a very uncertain note in July [1914], allowing the Germans to delude themselves that Britain might be neutral ... the contrast in habits between the energy and enthusiasm of the young First Lord and the lackadaisical habits of the First Sea Lord Prince Louis of Battenberg made Fisher's recall all but inevitable." Upon the outbreak of war,
gout began to cause Battenberg considerable pain, and the naval staff he had set up did not function as well as it ought to have done. On 6 August 1914 Battenberg and the French Deputy Chief of Staff of the Navy
Antoine Schwerer signed a convention in London on the division of responsibilities between the two navies. The convention confirmed the terms of the
Entente Cordiale, and placed France in command of all naval operations in the Mediterranean. Driven by public opinion, Churchill asked Prince Louis to resign as First Sea Lord on 27 October 1914. When acceptance of Battenberg's resignation was delayed by
the King's opposition to the appointment of Fisher in his place, Louis wrote to Churchill, "I beg of you to release me. I am on the verge of breaking down & I cannot use my brain for anything." On 13 November he wrote to Churchill's
Naval Secretary, Rear-Admiral
Horace Hood, "It was an awful wrench, but I had no choice from the moment it was made clear to me that the Government did not feel themselves strong enough to support me by some public pronouncement". Churchill later told
George Riddell (Diary 29 April 1915) that Battenberg had been "very lethargic". He was also critical of
Doveton Sturdee "not a good Chief of Staff. He is a good fighting admiral but not a clever man." His resignation was announced amid an outpouring of appreciation from politicians and naval comrades. Battenberg had written to Churchill on 28 October, "What I shd (sic) value above all else is to be admitted to the
Privy Council". The King later swore Louis in as a Privy Councillor in a public show of support. Admiral of the Fleet
Lord John Hay thought that the "ingeniously propagated lies" originated from
Germany. Prince Louis held no official post for the remainder of the war and lived in retirement at Kent House on the
Isle of Wight. He occupied his time in writing a comprehensive encyclopaedia on naval medals published in three large volumes, which became the standard reference work on the subject. His naval career had been characterised by industry, invention and intellect; he introduced mechanical calculators to compute navigations and a cone signalling apparatus. and he officially retired on 1 January 1919 "at [his] own request", shortly before reaching the mandatory retirement age of 65. ==Adoption of the surname Mountbatten==