He served with his regiment in the Crimean War of 1854, and up to February 1855, and was present at the battles of Alma, Balaclava (where he was wounded), Inkerman, and the siege of Sebastopol. On 28 June 1855 he was appointed assistant military secretary to Major-general Lord William Paulet, commanding on the Bosphorus, and continued in the same office under Sir Henry Knight Storks until the end of the war on 31 July 1856, when he was rewarded with a medal and four clasps, the fifth class of Medjidie, and the Turkish medal.