Generate a correct and concise answer for the question based on the words in the context.

Context : The 18th Mounted Brigade previously known as the 2/1st Yorkshire Mounted Brigade was a 2nd Line yeomanry brigade of the British Army during the First World War.
Question : To which branch did 18th Mounted Brigade belong?
British Army

Context : The Webley Revolver (also known as the Webley Top-Break Revolver or Webley Self-Extracting Revolver) was, in various marks, the standard issue service pistol for the armed forces of the United Kingdom, the British Empire, and the Commonwealth from 1887 until 1963.
Question : Which was the official year for the approval of Webley Revolver?
1887

Context : The Davidka (Yiddish: , ''Little David'') was a homemade Israeli mortar used in Safed and Jerusalem during the early stages of the 1948 Israeli War of Independence.
Question : What was the year Davidka entered service?
1948