The Ninety-First Brigade is a military unit that has served in various conflicts, primarily within the United States Army. It is known for its role in World War I and World War II, where it participated in significant battles and operations. The brigade is often recognized for its contributions to the overall success of military campaigns. Throughout its history, the Ninety-First Brigade has undergone several reorganizations and changes in structure. It typically consists of infantry and support units, allowing it to adapt to different combat scenarios. The brigade's legacy continues to be honored by veterans and military historians alike.