The British Army was first established as a standing army in 1660, following the restoration of the monarchy after the English Civil War.

The Royal Scots, also known as the Royal Regiment of Scotland, is the oldest regiment in the British Army, with a history dating back to 1633.

The Duke of Marlborough, John Churchill, was the first Commander-in-Chief of the British Army, serving from 1702 to 1711.

The Foot Guards, consisting of five regiments, are responsible for protecting the royal family and guarding royal residences.

The motto of the British Army is 'Pro Patria', which means 'For Country' in Latin.

The Parachute Regiment, also known as the Paras, is the British Army's airborne forces unit, specializing in parachute drops and air assaults.

The Special Air Service (SAS) is the British Army's elite special forces unit, known for its highly specialized operations and counter-terrorism capabilities.

The Royal Tank Regiment is the British Army's armored corps, responsible for operating tanks and other armored vehicles.

The Royal Artillery is the British Army's artillery unit, responsible for providing fire support to other units.

The Royal Engineers are the British Army's engineering unit, responsible for providing engineering support, including construction, demolition, and bridging.

The Royal Logistics Corps is the British Army's logistics unit, responsible for providing logistical support, including transportation, supply, and maintenance.

The Royal Army Medical Corps is the British Army's medical unit, responsible for providing medical support to soldiers.

The Royal Signals is the British Army's signals unit, responsible for providing communications and information systems support.

The Adjutant General's Corps is the British Army's administrative and personnel support unit, responsible for managing human resources, discipline, and welfare.

The Royal Electrical and Mechanical Engineers are the British Army's electrical and mechanical engineering unit, responsible for maintaining and repairing vehicles, weapons, and other equipment.