Dee ihe na-aga n'ihu maka paragraf a - Akụkọ banyere battalion nwere ike ịlaghachi azụ na 15 Mee 1846 mgbe e guzobere otu ụlọ ọrụ nke ndị na-egwupụta akụ, ndị na-egwupụta akụ, na ndị pontoniers na West Point, New York. Alpha Company, 1st Engineer Battalion bụ onye si n'otu ahụ pụta. Ndị agha ahụ enwetala ihe nrite 67 na ihe ngosi mkpọsa na ihe nrite mba asatọ. Company A jere ozi n'oge agha Mexico na America nke 1846, na-ekere òkè na mkpọsa Veracruz
na-awụlikwa elu ugwu Chapultepec dị na Mexico City.