Operation Anger was a military operation to seize the city of Arnhem in April 1945, during the closing stages of the Second World War. It is also known as the Second Battle of Arnhem or the Liberation of Arnhem. The operation was part of the Canadian First Army's liberation of the Netherlands and was led by the 49th British Infantry Division, supported by armour of the 5th Canadian Armoured Division, Royal Air Force air strikes and boats of the Royal Navy.