Louis Albert Guislain Bacler d’Albe (Saint-Pol, 21 October 1761 – Sèvres, 12 September 1824)
Son of a treasurer of the Toul regiment, he was a painter, who enrolled as a volunteer in 1793, serving first as an artillery captain and then from 1796 as a geographical engineer. He founded the Cisalpine Topographical bureau in 1797, then was chief of the geographical engineers after Brumaire. From 1804 onward he was the chief of Napoleon’s topographical cabinet, was named a baron of the Empire in 1809, and became a brigadier in 1813. He was director of the General War Depot from 1814 to 1815.