N'oge Agha Ụwa nke Abụọ, dị ka Ọchịagha Ukwu nke Oké Osimiri Mediterenian, Cunningham duuru ndị agha mmiri nke Britain gaa na mmeri n'ọtụtụ agha mmiri dị na Mediterenian. Nke a gụnyere mwakpo a wakporo Taranto
n'afọ 1940, mwakpo ụgbọelu nke mbụ n'akụkọ ihe mere eme, na Agha nke Cape Matapan n'afọ 1941. Cunningham na-achịkwa nchebe nke usoro nnweta nke Mediterranean site na Alexandria, Gibraltar, na isi ihe mgbochi nke Malta. Ọ na-eduzi nkwado ụgbọ mmiri maka ọtụtụ ndị isi Allied landings na Western Mediterranean littoral. N'oge mgbụsị akwụkwọ nke 1943, na onye na-arụ ọrụ, Sir Dudley Pound, na-anwụ anwụ, Cunningham kwalitere ya na First Sea Lord, onye isi ọkachamara nke Royal Navy, ọkwá ọ nọ na ya ruo mgbe ọ lara ezumike nká na 1946. E mere ya Baron Cunningham nke Hyndhope na 1945 ma mee ya Viscount Cunningham nke Hyndhope n'afọ sochirinụ. Mgbe ọ lara ezumike nká, Cunningham nwere ọtụtụ ọkwá emume, gụnyere Lord High Steward na okpueze nke Queen Elizabeth nke Abụọ na 1953. Ọ nwụrụ na 12 June 1963, mgbe ọ dị afọ 80.