On March of 1776, General Washington took command of the Continental Army. For them to regain control of Boston he requested heavier guns. Washington moved the army To Dorchester Heights. The army positioned themselves and their weapons so that the British General Howe would wake up to see them in a threatening position. On March 7, 1776 General Howe retreated his troops to Canada.
On the evening of December 25, 1776 General Washington led a surprise attack on the german mercenaries, the Hessians, who were left by the British to hold their position in Trenton, New Jersey. The Patriots had needed a victory after the losses they had suffered. This Patriot victory led to the British fleeing Princeton.
On January 2, 1777 the Battle of Princeton in New Jersey was a turning point for Washington and his troops. The Patriots left their campfires burning to trick the British troops. They circled behind the troops and attacked in the morning. The British fled. This battle saved the army and the revolution for the Patriots.
In the spring of 1777 in Saratoga, New York the Patriot army led by General Horatio Gates battled the British army led by General John Burgoyne. The British surrendered and the Patriots winning boosted their morale. This was a true turning point in the war.
The Patriots camped during the winter of 1777 in Valley Forge, Pennsylvania. Their were no battles of armies, but the weather was a torturous enemy. The army was running low on food, clothing and basic protection against winter. Over 2,000 soldiers perished from sickness and famine. Unbelievably, when spring came the survivors stayed to fight on.