Mezue ahịrịokwu na-esonụ: N'ịgbaso ịbanye Ịtali n'agha na 10 June 1940, Waller tinyere aka n'ịchọ ebe ndị e liri ogbunigwe n'ụsọ oké osimiri North Africa. N'ịbụ onye na-agba égbè nke ọma, ọ na-eji égbè na mgbọ ndị na-agbaji ihe agha eme ka ogbunigwe ndị na-ese n'elu mmiri gbapụ. Na 21 June, "Stuart" gbara obodo Bardia nke ndị Ịtali na-achị. N'ọnwa na-eso ya, ụgbọ mmiri nke iri ya so na Agha Calabria. Ụgbọ mmiri Waller gbara bọmbụ na Fort Capuzzo na 17 Ọgọstụ na ọdụ ụgbọ mmiri ndị Italy dị na Ọwara Oké Osimiri Bomba otu izu ka e mesịrị. N'ọnwa Septemba, e nyere ya onyinye Distinguished Service Order (DSO) maka "nkwuwa okwu, ụlọ ọrụ, na nraranye nye ọrụ na nso nso a"<unk> ọkachasị, ịkọwapụta ebe ndị iro. N'otu ọnwa ahụ, a kpọfere ya na HMAS "Vampire" ebe "Stuart" gara ịrụzigharị. Ka ndị agha Allied bidoro ịwakpo ndị agha Italy n'ọnwa Disemba afọ 1940, onye isi ndị agha Mediterranean, Admiral Sir Andrew Cunningham, nyere Waller iwu nke Inshore Squadron nke e hiwere ọhụrụ, nke gụnyere ndị na-ebibi ụgbọ mmiri, ndị na-egwu ala, na ndị enyemaka. N'ọrụ ya dị ka Cunningham's Senior Officer Afloat, Waller na-ahụ maka nkwado ụgbọ mmiri maka
mwakpo a wakporo Bardia, nke ndị Allies meriri na 5 Jenụwarị 1941. N'oge na-adịghị anya mgbe nke ahụ gasịrị, o nyefere iwu nke Inshore Squadron ma bufee ya na "Stuart".