The Spanish-American War of 1898 witnessed the pivotal involvement of the 4th Corps, a crucial component of the United States military during this transformative period. The 3rd Division within the 4th Corps played a significant role in the unfolding events of the conflict, contributing to key moments in the war that ultimately reshaped the geopolitical landscape.
 
Led by notable commanders such as Brigadier General Charles A. Wikoff, the 3rd Division engaged in critical battles during the war, including the infamous Battle of San Juan Hill in Cuba. The division's soldiers demonstrated exceptional bravery and determination, overcoming challenging terrain and fierce Spanish resistance. The Battle of San Juan Hill, in particular, became a defining moment for the 3rd Division, showcasing their resilience and dedication to the cause.
 
The 4th Corps' 3rd Division played a vital role in the broader campaign that led to the Spanish withdrawal and the eventual American victory. The war's outcome marked the emergence of the United States as a global power and resulted in the acquisition of territories such as Puerto Rico, Guam, and the Philippines. The historical significance of the 3rd Division's contributions during the Spanish-American War remains a testament to the bravery and sacrifice of those who served in this pivotal chapter of American military history.