George joined the Royal Navy in 1842 at age 12, a first class volunteer aboard HMS Calcutta, commanding. He would spend seven years as a midshipman, before becoming a mate aboard HMS Excellent in 1849. He was then acting lieutenant on several occasions, before being confirmed to that rank in 1851. In 1866, the Foreign Office reported on "great judgement" displayed by George during a daring expedition up the Niger River aboard HMS Investigator, a journey he documented in his journal. During his naval career, George served aboard the following ships:
1842, HMS Calcutta
1842–1843, HMS Monarch
1843–1845, HMS Aigle
1845, HMS Formidable
1845, HMS Siren
1849, HMS Excellent
1849–1850, HMS Phoenix
1850–1851, HMS Helia
1851–1852, HMS Philomel
1852–1853, HMS Daring
1853–1856, HMS Imaun
1861–1865, HMS Wellesley
1865, HMS Espoir
1865, HMS Investigator
1865–1866, HMS Sparrow
1866, HMS Espoir
1866–1867, HMS Wellesley
1867, HMS Fisgard
1867–1868, HMS Wellesley
1869–1873, HMS Trafalgar
He was paid off from the navy in 1869, and then served for a short period with the coast guard in Sligo, Ireland, as a division lieutenant. He documented his final year of service in Ireland in another journal, filled with details such as the loss of ships and crew, the recovery of drowning victims, and discipline meted out to coast guardsmen.
George lived in Belvedere, Kent, at the time of his death on 7 May 1912.
Niger River Expedition
In late 1865, George, who was then a lieutenant, was given command of HMS Investigator, a steam-powered, flat-bottomed British navy gunship. He spent the next several months steaming the ship up the Niger River, bringing gifts from the British government, in Queen Victoria's name, to tribal kings and elders along the river. During the voyage, George mediated a dispute between British colonists and Obi Akazua, who reigned amongst the people at Onitsha, Nigeria. He observed first-hand the slave trade, which flourished locally despite the cessation of the trade throughout most of the western world. He recorded his interactions in a handwritten diary, including coloured illustrations of aspects of contemporary West African life along the river, such as this drawing of a brass canoe fitted with an awning and armed with cannons, used for local trade along the river.