Dee ihe na-esote paragraf a - Na mbido 1941, McGrigor bụ, nwa oge, Flag Captain,, flagship nke Sir James Somerville ma tinye aka na Malta Convoys na ọrụ ndị ọzọ na Atlantic na Mediterranean gụnyere bọmbụ nke Genoa na February 1941 na nmikpu nke "Bismarck" na May 1941. E buliri ya n'ọkwa onye isi ndị agha na 8 Julaị 1941. N'agbata 9 Septemba 1941 na mbido 1943, ọ bụ osote onye isi ndị ọrụ ụgbọ mmiri (Ngwá Agha). Na ngwụcha afọ 1943, o duziri ndị agha mmiri (Force B) na-ekpuchi njide nke agwaetiti Italy nke Pantelleria (Operation Corkscrew) na mbuso agha nke Sicily.
nke e ji nye ya ihe nrite Distinguished Service Order. O jere ozi dị ka onye na-ahụ maka ọkọlọtọ, Sicily, ebe ọ merụrụ ahụ, ruo ọnwa atọ tupu e bugharịa ya dị ka onye na-ahụ maka ọkọlọtọ, Taranto na Adriatic (dabere na ụlọ ọrụ dị n'ụsọ oké osimiri na Alexandria) ruo na njedebe nke 1943.