The Battle of San Pasqual, also spelled San Pascual, was a military encounter that occurred during the Mexican–American War in what is now the San Pasqual Valley community in the county of San Diego, California. The series of military skirmishes ended with both sides claiming victory, and the victor of the battle is still debated. On December 6 and 7, 1846, General Stephen W. Kearny's US Army of the West, along with a small detachment of the California Battalion led by Archibald H. Gillespie, engaged a small contingent of Californios and their Presidial Lancers Los Galgos, led by Major Andrés Pico. After U.S. reinforcements arrived, Kearny's troops were able to reach San Diego.