Anstice was commissioned into the
Royal Tank Corps on 7 April 1916 and from August that year he saw service in France and Belgium until the end of the
First World War. In October 1922, he was transferred to the 5th Battalion
Royal Inniskilling Dragoon Guards. Between January 1934 and September 1937, Anstice was
adjutant of the
Lanarkshire Yeomanry, a Scots
Territorial Army unit. In 1939, he returned to the 5th Royal Inniskilling Dragoon Guards, this time as Commanding Officer, taking the unit to France. In 1940, Anstice was appointed commander of
30th Armoured Brigade before transferring to command the
7th Armoured Brigade in 1941. ==References==