 An American force, sent to destroy General Gordon Drummond's source of flour, was challenged by a contingent of infantry which was supported by a light field cannon and a frame of Congreve rockets.The rockets succeeded in discouraging the Americans from forming lines on the battlefield.Captain Henry Lane's 1st Rocket Troop of the Royal Horse Artillery embarked at the end of 1814 in the transport vessel "Mary" with 40 artillerymen and 500 rockets and disembarked near New Orleans.