This publication analyses and explains the role of the U.S. Army Topographical Engineer Corps in the war with Mexico, commencing with the activities of the Topographical Engineers in 1845 and tracing their evolution from a scientific, mapping, and construction agency of the federal government to their active participation in the war. Includes the role the Topographical Engineers played in military reconnaissances and explorations in anticipation of the hostilities between the United States and Mexico. Their role during the war is recounted, particularly the conquest and explorations of California, New Mexico, and Arizona. Included is Capt. John C. Fremont's third expedition, important for both its military and geographic contributions. Under the commands of Generals Scott and Taylor in Mexico, several officers of the corps assumed important leadership responsibilities in addition to their topographic duties.

For sale by the Superintendent of Documents, U.S. Spine title: Topographical engineers in the Mexican War. INCLUDES INDEX. SHIPPING LIST NO.: 93-0308-P. "FIRST PRINTING"--T.P. VERSO.

Genesis of a small corps --On to the Golden Gate with Fremont -- With the Army of the West -- Lieutenants Abert and Peck in New Mexico -- With Zachary Taylor in Northern Mexico -- Wool and his topogs join Taylor -- To Mexico City with Scott -- So much by so few.