DEBORRE, Preudhonnne, soldier. He was a French officer, who had seen thirty-five years of European service, and was given a commission in the American army about 1777. On 22 August of that year he commanded a brigade in Sullivan's attack on Staten Island. At the battle of the Brandywine, on 11 September General Deborre claimed the post of honor on the right wing of the army; but Sullivan would not yield this to him, and when Deborre pertinaciously insisted on taking it, the former made a long and circuitous march for the purpose of outreaching him, which did not accomplish its object, and in consequence of which his brigade was not formed for action when the battle began. Deborre's brigade was the first to give way before the British attack. His insubordination was made the subject of a congressional inquiry, and he resigned his commission, he was unpopular in the army, and totally unfit to command American troops.