He served throughout the Crimean War. For his services with the Ottoman army in Silistra, prior to the invasion of the Crimea, he later received the first-class gold medal of the Liakat. Raines carried the Queen's Colour at the Battle of Alma, and also saw action at the battles of Inkerman and Tchemaya. During the siege and fall of Sevastopol he served as an assistant engineer, being severely wounded in the trenches during the bombardment of 17 October 1854, and being present in the trenches at the attack on the Redan on 18 June 1855. He received the medal with three clasps, and was mentioned in dispatches 'as having served with zeal and distinction from the opening of the campaign.' The Sardinian and Turkish war medals and fifth class Order of the Medjidie were also awarded to him. He became a brevet major on 24 April 1855, and he became a full major on 1 May 1857.