First, that meant identifying—and then obstructing—any and all routes the British might take to attack the city. To help with that process, Edward Livingston brought the architect Arsène Lacarrière Latour to Jackson’s headquarters on Royal Street. Jackson was impressed, both with the man and with the maps of New Orleans and its vicinity. Because Latour displayed the kind of knowledge the general needed, Jackson promptly named him principal engineer of the U.S. Army’s Seventh Military District.
