The Admiralty and Marine Affairs Office (1546-1707) originally known as the Admiralty Office (1414-1546) was a government office of the Kingdom of England and the English Navy's central command. It was first established in 1414 when the remaining regional admiralties, the Northern and Western were abolished and their functions were unified under a single centralized command. It was administered by the Office of the High Admiral of England, Ireland and Aquitaine later called the Lord Admiral of England. During the sixteenth century it oversaw the creation of standing "Navy Royal", with its own secretariat, dockyards and a permanent core of purpose-built warships, originated in the early 16th century during the reign of Henry VIII. Under Elizabeth I England became involved in a war with Spa