After the British army's pyrrhic victory at Bunker Hill, the Americans maintained their armed presence nearby. General George Washington, now in charge of American forces, proposed various attack plans, but the British navy's control of Boston's harbor forestalled them. Finally, General Henry Knox arrived with artillery after dragging the pieces over an arduous 300 mile journey from Fort Ticonderoga. Now Washington could attack the British without their navy being able to protect their army.