law ▁of ▁Herbert ▁Fitz her bert , ▁the ▁Executive ▁Officer ▁of ▁the ▁Iron ▁Duke ▁and ▁was ▁made ▁a ▁Commander ▁in ▁ 1 9 2 8 . ▁ ▁C unning h ame ▁Graham ▁had ▁the ▁unusual ▁experience ▁of ▁att ending ▁all ▁three ▁staff ▁colleg es : ▁Naval ▁at ▁Green wich ▁ 1 9 2 9 - 3 0 ; ▁Army ▁at ▁Cam ber well ▁ 1 9 3 0 - 3 1 ; ▁and ▁Air ▁Force ▁at ▁And over ▁ 1 9 3 4 . ▁ ▁Between ▁ 1 9 3 1 ▁and ▁ 1 9 3 4 , ▁he ▁served ▁as ▁Executive ▁Officer ▁on ▁the ▁cru iser ▁HMS ▁Card iff ▁on ▁the ▁South ▁Africa ▁station ▁. ▁He ▁was ▁appointed ▁Staff ▁Officer ▁( Oper ations ▁and ▁Int elligence ) ▁at ▁N ore ▁Command ▁in ▁ 1 9 3 5 . ▁Having ▁res igned ▁himself , ▁as ▁had ▁happened ▁to ▁his ▁father , ▁to ▁remain ▁a ▁Commander ▁for ▁the ▁rest ▁of ▁his ▁naval ▁service , ▁he ▁was ▁promoted ▁to ▁Captain , ▁at ▁the ▁last ▁possible ▁jun ct ure ▁under ▁the ▁batch ▁system ▁then ▁in ▁force , ▁on ▁ 3 1 ▁December ▁ 1 9 3 5 . ▁ ▁In ▁January ▁ 1 9 3 6 , ▁George ▁V ▁died ▁and ▁C unning h ame ▁Graham , ▁await ing ▁his ▁first ▁command , ▁acted ▁as ▁A ide - de - camp ▁to ▁Prince ▁Paul ▁of ▁Greece ▁during ▁his ▁visit ▁to ▁London ▁for ▁the ▁state ▁fun eral . ▁He ▁was ▁appointed ▁in ▁the ▁aut umn ▁of ▁