Pedzisa mutsara unotevera: Porteous akagadzwa muRoyal Regiment of Artillery muna 1937. Pana 26 August 1940 akasimudzirwa kuva lieutenant. Pana 19 August 1942, akanga ane makore 24 okukura uye mukuru wenguva pfupi akabatanidzwa kuNo. 4 Commando paakaita chiito chaakapiwa VC, munguva ye
Kurwisa kweDieppe. Kutaura kwacho kwakabudiswa muchikamu che"London Gazette" chaOctober 2, 1942 uye kwakanzi: