Halleck, Henry Wager, 1815-1872

Halleck was born on a farm in Westernville, Oneida County, New York, third child of 14 of Joseph Halleck, a lieutenant who served in the War of 1812, and Catherine Wager Halleck. Young Henry detested the thought of an agricultural life and ran away from home at an early age to be raised by an uncle, David Wager of Utica. He attended Hudson Academy and Union College, then the United States Military Academy. He became a favorite of military theorist Dennis Hart Mahan and was allowed to teach classes while still a cadet. He graduated in 1839, third in his class of 31 cadets, as a second lieutenant of engineers. After spending a few years improving the defenses of New York Harbor, he wrote a report for the United States Senate on seacoast defenses, Report on the Means of National Defence, which pleased General Winfield Scott, who rewarded Halleck with a trip to Europe in 1844 to study European fortifications and the French military. Returning home a first lieutenant, Halleck gave a series of twelve lectures at the Lowell Institute in Boston that were subsequently published in 1846 as Elements of Military Art and Science. His work, one of the first expressions of American military professionalism, was well received by his colleagues and was considered one of the definitive tactical treatises used by officers in the coming Civil War. His scholarly pursuits earned him the (later derogatory) nickname "Old Brains."

During the Mexican–American War, Halleck was assigned to duty in California. During his seven-month journey on the transport USS Lexington around Cape Horn, assigned as aide-de-camp to Commodore William Shubrick, he translated Henri Jomini's Vie politique et militaire de Napoleon, which further enhanced his reputation for scholarship. He spent several months in California constructing fortifications, then was first exposed to combat on November 11, 1847, during Shubrick's capture of the port of Mazatlán; Lt. Halleck served as lieutenant governor of the occupied city. He was awarded a brevet promotion to captain in 1847 for his "gallant and meritorious service" in California and Mexico. (He would later be appointed captain in the regular army on July 1, 1853.) He was transferred north to serve under General Bennet Riley, the governor general of the California Territory. Halleck was soon appointed military secretary of state, a position which made him the governor's representative at the 1849 convention in Monterey where the California state constitution was written. Halleck became one of the principal authors of the document. The California State Military Museum writes that Halleck "was [at the convention] and in a lone measure its brains because he had given more studious thought to the subject than any other, and General Riley had instructed him to help frame the new constitution." He was nominated during the convention to be one of two men to represent the new state in the United States Senate, but received only enough votes for third place. During his political activities, he found time to join a law firm in San Francisco, Halleck, Peachy & Billings, which became so successful that he resigned his commission in 1854. The following year, he married Elizabeth Hamilton, granddaughter of Alexander Hamilton and sister of Union general Schuyler Hamilton. Their only child, Henry Wager Halleck, Jr., was born in 1856, and died in 1882.

...