Kammala jumla mai zuwa: 220th Siege Battery wani rukunin howitzer ne mai nauyi na Royal Garrison Artillery (RGA) na Burtaniya da aka kafa a Essex da Suffolk a lokacin Yaƙin Duniya na 1. Ya ga aiki a Yammacin Yamma a Messines da Ypres, a kan Jamusanci Spring Offensive, a
Villers-Bretonneux da kuma a cikin karshe Allied ɗari Days Offensive.