John Lambert was an English Parliamentarian general and politician. Widely regarded as one of the most talented soldiers of the period, he fought throughout the Wars of the Three Kingdoms, and was largely responsible for victory in the 1650 to 1651 Scottish campaign.

The Anglo-Scottish war (1650–1652), also known as the Third Civil War, was the final conflict in the Wars of the Three Kingdoms, a series of armed conflicts and political machinations between shifting alliances of religious and political factions in England, Scotland and Ireland.