Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Problem:Context : Bertrand Stewart (December 1872 -- 18 September 1914) worked as a solicitor in London and was also a military officer in the Queen's Own West Kent Yeomanry, he fought in the Second Boer War and World War I. In between the two wars he volunteered to spy on German naval actions.
Question : In what military organization did Bertrand Stewart serve?
Solution:
Queen's Own West Kent Yeomanry