Lieutenant-General Sir Henry James Warre KCB (1819 - 3 April 1898) was a British Army officer. Warre was the son of lieutenant-general Sir William Warre who saw service in the Peninsular War as William Beresford, 1st Viscount Beresford's aide-de-camp. Educated at the Royal Military College, Sandhurst, Warre was commissioned into the 54th Regiment of Foot in 1837. He became aide-de-camp to Sir Richard Downes Jackson, Commander-in-Chief of the Forces in British North America in 1839.
In 1845 he was sent on a military reconnaissance mission with Mervin Vavasour to the Oregon Country to prepare for a potential Anglo-American war over the territory. During the trip he made paintings and sketches of the region, and reported on possible military preparations. Warre commanded the 57th Regiment of Foot in the Crimean War in 1855.
Later he led his regiment in the Second Taranaki War in New Zealand in Spring 1865, seizing Maori land on the north Taranaki coast and establishing posts from Pukearuhe, 50 km north of New Plymouth, to Opunake, 80 km south of the town. He became Commander-in-Chief of the Bombay Army in 1878 and served in that role during the Second Anglo-Afghan War until he retired in 1881.
Warre was also a talented artist and published two books of sketches from his journeys: 'Sketches in North America and the Oregon Territory' (1848) and 'Sketches in the Crimea' (1856).
Joseph Schafer, "Documents Relative to Warre and Vavasour's Military Reconnoissance in Oregon, 1845-6," Quarterly of the Oregon Historical Society, Vol. 10, No. 1 (March, 1909), pp. 1-99.