Mezue ahịrịokwu na-esonụ: Ná mmalite nke Agha Ụwa nke Abụọ Holbrook bụ onye na-enye ọzụzụ n'ịgba egbe, ndị agha ụlọ. Ọ bụ onye ọchịagha nke ndị agha nke 73rd Anti Tank Regiment Royal Artillery n'oge Mgbasa Ozi North Africa n'etiti 1942 na 1943. Ọ bụ ya bụ onyeisi ndị agha nke isii nke Royal Artillery n'oge agha ahụ.
Ndị Allied wakporo Sicily ma mesịa banye n'ala Italy. E buliri ya n'ọkwa onye na-arụ ọrụ brigadier na 5 Eprel 1943 na onye brigadier nwa oge na 5 Ọktọba 1943. A kpọtụrụ ya aha na ozi nke ugboro abụọ na 24 Ọgọstụ 1944, na Disemba 1944 a na-etinye ya dị ka onye isi nke Order nke Alaeze Ukwu Britain. Na ngwụcha agha ahụ ọ bụ onye isi ndị agha Royal Artillery III Corps. N'agbata Eprel 1949 na Disemba 1951 Holbrook jere ozi dị ka onye na-enyere George VI aka, mgbe nke ahụ gasịrị ọ lara ezumike nká.