The Battle of Belleau Wood occurred in mid-1918 during World War I, where American forces were pressed into action against the advancing German army. The Allied commanders, General John J. Pershing and Brigadier General James Harbord, orchestrated a fierce counterattack in an attempt to stop the German forces from breaking through to Paris. Belleau Wood, a dense forest area, became the stage for intense hand-to-hand combat, highlighting both the challenges of forest warfare and the resolve of the American soldiers. The battle spanned from June 1 to June 26, with the decisive engagement taking place at the end of the month.

As the battle progressed, American soldiers faced overwhelming German forces who were entrenched and well-prepared. The fighting was characterized by brutal tactics, including a significant use of artillery and heavy machine guns. The American troops distinguished themselves through their tenacity and boldness, earning respect from their counterparts and altering the dynamics of future engagements. The victory at Belleau Wood not only halted the German offensive but also served as a morale booster for Allied forces, convincing them that victory was achievable.

The battle concluded with severe losses on both sides, leaving a lasting legacy. The U.S. Marine Corps, in particular, was able to solidify its reputation for courage, earning the nickname 'Teufel Hunden' or 'Devil Dogs' from German soldiers. Belleau Wood represented a turning point in American military involvement in World War I, as it marked the transition from primarily defensive actions to more aggressive engagements by American forces.