Mezue ahịrịokwu na-esonụ: 220th Siege Battery bụ nnukwu howitzer unit nke Britain Royal Garrison Artillery (RGA) nke e guzobere na Essex na Suffolk n'oge Agha Worldwa Mbụ. Ọ hụrụ ọrụ na Western Front na Messines na Ypres, megide German Spring Offensive, na
Villers-Bretonneux na na ikpeazụ Allied Otu narị Days Offensive.