Colonel George Monck of the English Army forms Monck's Regiment of Foot, which will later become the Coldstream Guards.

George Monck, 1st Duke of Albemarle was an English military officer and politician who fought on both sides during the Wars of the Three Kingdoms. A prominent military figure under the Commonwealth, his support was crucial to the 1660 Stuart Restoration of Charles II.

The English Army was the army of the Kingdom of England from 1661 to 1707. It was raised by Charles II of England after the Stuart Restoration of 1660 saw him ascend to the English throne, and consisted partly of personnel who were veterans of either the Royalist units Charles II maintained while exiled in France or the New Model Army. The English army was the second standing army of the English state after the New Model Army, and was raised at the same time as the Irish and Scottish armies.

The Coldstream Guards is the oldest continuously serving regular regiment in the British Army. As part of the Household Division, one of its principal roles is the protection of the monarchy; due to this, it often participates in state ceremonial occasions. The Regiment has consistently provided formations on deployments around the world and has fought in the majority of the major conflicts in which the British Army has been engaged.

August 13 is the 225th day of the year in the Gregorian calendar; 140 days remain until the end of the year.