War was declared on the 18th June, 1812; or shortly after Bainbridge was established at his new post. By this time death had cleared the list of captains of most of his superiors. Murray was at the head of the navy, but too old and infirm for active service. Next to him stood Rodgers; James Barron came third, but he was abroad; and Bainbridge was the fourth. This circumstance entitled him to a command afloat, and he got the Constellation 38, a lucky ship, though not the one he would have chosen, or the one he might justly have claimed in virtue of his commission. But the three best frigates had all gone to sea, in quest of the enemy, and he was glad to get any thing. A few weeks later, Hull came in with the Constitution, after performing two handsome exploits in her, and very generously consented to give her up, in order that some one else might have a chance. To this ship Bainbridge was immediately transferred, and on board her he hoisted his broad pennant on the 15th September, 1812. The Essex 32, Capt. Porter, and Hornet 18, Capt. Lawrence, were placed under Bainbridge’s orders, and his instructions were to cruise for the English East India trade, in the South Atlantic. The Essex being in the Delaware, she was directed to rendezvous at the Cape de Verdes, or on the coast of South America. The Constitution and Hornet sailed in company, from Boston, on the 26th October, but the events of the cruise prevented the Essex, which ship was commanded by Porter, his old first lieutenant in the Philadelphia, from joining the commodore. The Constitution and Hornet arrived off St. Salvador on the 13th of December. The latter ship went in, and found the Bonne Citoyenne, an enemy’s cruiser of equal force, lying in the harbor. This discovery led to a correspondence which will be mentioned in the life of Lawrence, and which induced Bainbridge to quit the offing, leaving the Hornet on the look-out for her enemy. On the 26th, accordingly, he steered to the southward, intending to stand along the coast as low as 12° 20′ S., when, about 9, A. M., on the 29th, the ship then being in 13° 6′ S. latitude, and 31° W. longitude, or about thirty miles from the land, she made two strange sail, inshore and to windward. After a little manœuvring, one of the ships closing, while the other stood on towards St. Salvador, Bainbridge was satisfied he had an enemy’s frigate fairly within his reach. This was a fortunate meeting to occur in a sea where there was little hazard of finding himself environed by hostile cruisers, and only sixty-four days out himself from Boston.