172nd Siege Battery, Royal Garrison Artillery
…Army, serving with 39th and 8th HAGs. Third Army's front was quiet during the summer of 1917, but on 9 July the battery moved to 24th HAG (alongside 121st Siege Bty, also raised by the Glamorgan RGA). 24th HAG was attached to the French army, but it joined Fifth Army on 1 August, just after the start of the Third…