Edward Cardwell, 1st Viscount Cardwell, was a prominent British politician in the Peelite and Liberal parties during the middle of the 19th century. He is best remembered for his tenure as Secretary of State for War between 1868 and 1874 and, with William Ewart Gladstone's support, the introduction of the Cardwell Reforms. The goal was to centralise the power of the War Office, abolish purchase of officers' commissions, and to create reserve forces stationed in Britain by establishing short terms of service for enlisted men.

The Peelites were a breakaway political faction of the British Conservative Party from 1846 to 1859. Initially led by Robert Peel, the former Prime Minister and Conservative Party leader in 1846, the Peelites supported free trade whilst the bulk of the Conservative Party remained protectionist. The Peelites later merged with the Whigs and Radicals to form the Liberal Party in 1859.