The Battle of the Standard, sometimes called the Battle of Northallerton, took place on 22 August 1138 on Cowton Moor near Northallerton in Yorkshire, England. English forces under William of Aumale repelled a Scottish army led by King David I of Scotland. King Stephen of England, fighting rebel barons in the south, had sent a small force (largely mercenaries), but the English army was mainly local militia and baronial retinues from Yorkshire and the north Midlands.

Key figuresHenry I of EnglandRobert I of Scotland