Tuhia he haere tonu mo tenei waahanga - I noho a Callaghan hei rangatira rangatira mo te kaipuke rererangi me te whakahau i a ia i roto i nga mahi i te raumati o te tau 1901 i mua i tana noho hei rangatira rangatira mo te kaipuke whawhai i te teihana Mediterranean i te marama o Tihema 1901. I riro ia hei Kapene o Portsmouth Dockyard i te timatanga o te tau 1904 me te rangatira rangatira o te kaipuke whawhai i te teihana Mediterranean i muri tata mai. I tohua ia hei kaitiaki moana ki te Kingi i te 25 o Aperira 1904. I whakatairangahia ia ki te rear-miral i te 1 o Hurae 1905, ka noho ia hei Kaiwhakahaere Tuarua, Channel Fleet, me tana haki i te kaipuke pakanga, i te 1906 me te rangatira o te 5th Cruiser Squadron, me tana haki i te kaipuke patu patu, i te 1907. I tohua hei Kaihautū o te Royal Victorian Order i te 3 o Akuhata 1907, ka haere ia ki te Tuarua-i-te-Kōmihana o te Mediterranean Fleet me tana haki i te kaipuke pakanga i te tau 1908. I roto i te mahi whakamutunga i awhina ia ki te whakarato awhina ki nga oranga o te ru o Messina
, i mate ai te tata ki te 123,000 nga mate, i te Tihema 1908 na te mea i eke ia ki te Knight Commander o te Royal Victorian Order i te 30 o Aperira 1909 ka tohua hei Kaiwhakahaere Nui o te Order o te Karauna o Itari i te 15 o Aperira 1912. I whakatairangahia ia ki te tuarua-miraka i te 27 o Paenga-whawha 1910, ka noho ia hei Kaiwhakahaere Tuarua o te Home Fleet, me tana haki i runga i te kaipuke pakanga i muri mai i taua marama. I eke ia ki te Knight Commander o te Order of the Bath i te 24 o Pipiri 1910.