Whakaotihia te rerenga e whai ake nei: I uru a O'Bannon ki te Marine Corps i te 18 o Hanuere 1801. Hei rangatira tuatahi i whakawhiwhia ki a, i whakahau ia i tetahi roopu o nga Marines e whitu me nga kaitohutohu e rua o te Navy i roto i te ope hoia iti a te Consul General William Eaton (1764<unk>1811) i te pakanga o Tripoli o te Pakanga Barbary Tuatahi (1801<unk>1805). I roto i ngā mahi ngātahi ki te US Navy, i arahi ia i te whakaeke angitu i te
Te Pakanga o Derna, he taone takutai i te rawhiti o Libya hou i te Paenga-whāwhā 27, 1805, e tuku ana i te Marines' Hymn tona raina "ki nga takutai o Tripoli". Ko Lieutenant O'Bannon te tangata tuatahi ki te whakaara i te haki o te United States i runga i te whenua ke i te wa o te pakanga; Ko te rangatira o O'Bannon, ko William Eaton (1764<unk>1811), he rangatira o mua o te ope taua, i whakaara i te haki o Amerika i etahi marama i mua i a ia e haere ana i runga i te awa o Nile mai i Alexandria ki Cairo, engari kaore i te wa o te pakanga. E ai ki te pakiwaitara o te Marine Corps, i tino miharo a Hamet Karamanli ki te maia o O'Bannon i hoatu ai e ia he hoari Mameluke hei tohu whakaute.