- Prepared the AEF for Combat: Pershing focused on training and preparing the AEF for combat. He established several training camps in the United States and personally inspected and oversaw training exercises to ensure the troops were well-prepared for the challenging conditions of trench warfare in Europe.
- Arrived in France: Pershing and the initial contingent of the AEF arrived in France in June 1917. He quickly worked to establish a network of supply and logistics, as well as field hospitals and other infrastructure necessary to support the troops.
- Defended Against German Advance: The AEF saw their first major combat in September 1918, when the German army launched a major offensive. Pershing's forces played a crucial role in defending against this advance, particularly in the Battle of St. Mihiel and the Meuse Argonne Offensive.
- Meuse Argonne Offensive: The Meuse Argonne Offensive was one of the largest and bloodiest battles of World War 1. Pershing led the AEF in this offensive, which contributed significantly to the Allies' victory.
- Armistice Negotiations: Following the successful Meuse Argonne Offensive, Pershing represented the United States in the Armistice negotiations that led to the end of the war in November 1918.
- Occupation of Germany: After the war, Pershing remained in Europe to oversee the occupation of Germany by the Allied forces. He returned to the United States in September 1919.