[2] Charles Churchill joined the English Army as an ensign in the 3rd Regiment of Foot in 1674 and later received the colonelcy of that unit.

Churchill was returned as Member of Parliament for Weymouth and Melcombe Regis in a contest at the first general election of 1701 and was blacklisted for opposing preparations for war with France.

At Blenheim in 1704, he served under his elder brother John Churchill, 1st Duke of Marlborough, and commanded the center of the allied line.

[3] In late March 1708 onwards Churchill was 'seized with an apoplectic fit' but was non-the less returned as MP for Weymouth at the 1708 British general election.

He suffered ongoing ill-health and began to drink heavily, and did not stand for Weymouth at the 1710 British general election.

[3] His sister was Arabella, a royal mistress of King James II of Great Britain, and his brother George became an admiral.