Which three battles comprised the Three Crosses of War in World War I?

The correct identification of the battles that comprised the Three Crosses of War in World War I is Château-Thierry, Cantigny, and Argonne Forest. These battles are significant in U.S. military history and were crucial for the American Expeditionary Forces (AEF) on the Western Front.

Château-Thierry marked a pivotal moment in which American forces engaged in combat and played a crucial role in stopping the German advance towards Paris. Cantigny was notable as the first major offensive conducted by American troops, showcasing their growing effectiveness. Lastly, the Argonne Forest operation became one of the largest American campaigns during the war, leading to significant strategic gains.

In contrast, while Belleau Wood, Mont Blanc, and Soissons were indeed important battles during World War I, they do not form part of the Three Crosses of War, making that choice incorrect. Similarly, Verdun, Somme, and Ypres represent key battles but pertain more to overall allied efforts rather than specifically to the American experience in World War I. The choices involving Passchendaele, Amiens, and Arras also signify important engagements but are not linked to the Three Crosses of War concept as defined in U.S. military history.

Hence,