Frederic John Walker 

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#1896_births
#1944_deaths
#Burials_at_sea
#Companions_of_the_Distinguished_Service_Order
#Companions_of_the_Order_of_the_Bath
#Graduates_of_Britannia_Royal_Naval_College
#People_educated_at_the_Royal_Naval_College,_Osborne
#People_from_Seaforth,_Merseyside
#People_from_Plymouth
#Royal_Navy_officers_of_World_War_I
Captain Frederic John Walker, CB, DSO & Three Bars （3 June 1896 - 9 July 1944） （his first name is given as Frederick in the Oxford Dictionary
of National Biography and some London Gazette entries） was a Royal Navy officer noted for his exploits during the Second World War.
Walker was the most successful anti-submarine warfare commander during the Battle of the Atlantic and was known more popularly as Johnnie Walker （for the Johnnie Walker brand of whisky）.
Walker was born in Plymouth, the son of Frederic Murray and Lucy Selina （née Scriven） Walker.
He joined the Royal Navy as a cadet in 1909 and was educated at the Royal Naval Colleges at Osborne and Dartmouth, where he excelled.
First serving on the battleship Ajax as a midshipman, Walker as a sub-lieutenant went on to join the destroyers Mermaid and Sarpedon in 1916 and 1917 respectively.
Following the end of the First World War, Walker joined the Queen Elizabeth-class battleship Valiant.
He married Jessica Eileen Ryder Stobart, with whom he had three sons and a daughter.
During the interwar period Walker entered the field of anti-submarine warfare.
He took a course at the newly founded anti-submarine warfare training school of HMS Osprey, on the Isle of Portland, which was established in 1924.
Walker consequently became an expert in this particular type of warfare, and was appointed to a post specialising in this field, serving on a number of capital ships.
In May 1933 he was promoted to commander and took charge of the First World War destroyer Shikari.
In December 1933 Walker took command of the Shoreham-clas...