He was the son of a Quaker, Matthew Church of Cork. At the age of sixteen he ran away from home and enlisted in the British Army. For this violation of its principles he was disowned by the Society of Friends, but his father bought him a commission, dated 3 July 1800, in the 13th (Somersetshire) Light Infantry. He served in the demonstration against Ferrol, and in the expedition to Egypt under Sir Ralph Abercromby in 1801, where he took part in the Battle of Abukir and the taking of Alexandria. After the expulsion of the French from Egypt he returned home, but came back to the Mediterranean in 1805 among the troops sent to defend the island of Sicily. He accompanied the expedition which landed in Calabria, and fought a successful battle against the French at the Battle of Maida on 4 July 1