Kammala jumla mai zuwa: A 1941, yayin Yaƙin Duniya na II, Essame ya zama Kwamandan Kwamandan (CO) na 1st Battalion, East Lancashire Regiment. Da yake barin umurnin bataliya, an ba shi mukamin brigadier a watan Satumbar 1942 kuma ya zama kwamandan Brigade na 214 na Sojoji, yana jagorantar brigade a
fada a arewacin Turai. An ba shi lambar yabo ta Distinguished Service a watan Oktoba 1944. A watan Yuni 1945, wata daya bayan karshen yakin duniya na biyu a Turai, ya yi aiki a matsayin Janar Janar (GOC) na 43rd (Wessex) Infantry Division a maimakon GOC na asali, Manjo Janar Ivor Thomas. Essame ya zama Kwamandan Tsarin Mulkin Biritaniya a watan Oktoba na shekarar 1945.