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Entering Monterrey posed a risk, which is evident in the passage detailing the progression of Taylor's division as General Zachary Taylor was required to confront and halt the Mexican Army commanded by General Pedro de Ampudia.
This is referred to as the Battle of Monterrey, a brutal clash that took place during the Mexican-American War. The battle commenced on September 21, 1846, and concluded three days later with a triumph for General Taylor's forces.