Action at Osborne's V-48 On 27 April 1781, Brig. Gen. Benedict Arnold led the British army's 76th and 80th Regiments, the Queen's Rangers, and some other units in an assault at Osborne's in Chesterfield County. The Americans posted a number of Virginia Navy ships near here in a line across the James River to oppose the advance. American militia also had positions in this region. Following the attack of the British by land and water, the Americans retreated. Several ships loaded with cargo fell into British hands while several more were sunk. After fighting ceased, Maj. Gen. William Phillips joined Arnold later that day. On 29 Apr. they moved north to the town of Manchester opposite Richmond.