Honourable Artillery Company
The HAC expanded to three infantry battalions and seven artillery batteries during the First World War.
In September 1914, the 1st Battalion followed the British Expeditionary Force to France and fought in the 1st Battle of Ypres. After the fighting at the Battle of the Ancre in 1916 and the Battle of Arras in 1917, it became an officer training battalion and provided demonstration platoons