ɪn mˈeɪ, hˌævɪŋ ɐsˈɪstᵻd ɪnðə kəntˈɪnjuːəns əvən ɪfˈɛktɪv sˈɛkənd fɹˈʌnt, mˈæk kˈɛnzi wʌz ɐsˈaɪnd tə kˈɑːnvɔɪ dˈuːɾi ɪnðə stɹˈeɪt ʌv dʒɪbɹˈɔltɚ.
In May, having assisted in the continuance of an effective second front, MacKenzie was assigned to convoy duty in the Strait of Gibraltar.