An early example of a turning movement was by Julius Caesar in 48 BC. One of Napoleon I of France's favorite tactics was the "Strategy of Indirect Approach" or the turning movement. One corps of his army would hold the enemy's attention while the main force would move behind the enemy in a wide circle. Ideally he would use the terrain to hide the turning movement. He used this to great effect during his 1805 Ulm Campaign. He repeated his success with this tactic at the Battle of Jena–Auerstedt in 1806, and at the Battle of Friedland in 1807.