Final answer:
The commander of the American Expeditionary Force during World War I was General John J. Pershing, and the two war plans associated with American military strategy during the interwar period are Plan Red and Plan Blue.
Step-by-step explanation:
The man who was appointed to head the American Expeditionary Force (AEF) by President Woodrow Wilson was General John J. Pershing. The AEF played a crucial role in World War I alongside the Allies after the United States entered the conflict in 1917. General Pershing led the AEF effectively, emphasizing the importance of an independent command for American forces on the Western Front, resisting the integration of American troops into British and French units. Under his leadership, U.S. troops were first used as replacements for Allied forces but later fought as an independent entity. The American troops, often referred to as 'doughboys', made a significant impact and contributed to the eventual defeat of the Central Powers.
Regarding the two war plans of the armed forces, these refer to the strategic plans developed by the U.S. in the event of war. Plan Red and Plan Blue were color-coded war plans created during the interwar period, with Plan Red being a hypothetical plan for war with the British Empire and Plan Blue dealing with defense strategies against domestic threats. However, these plans were not specifically associated with General Pershing or the First World War. The correct option for the question is (a) General John J. Pershing; Plan Red and Plan Blue.