French helping hands were crucial if not indispensable to the success of American Revolution.
As France and Ireland were hereditary enemies or rivals of Britain in the centuries preceding U.S uprising it is naturally that France chose his side during the dispute ,first secretly and finally openly .
We must keep in mind that Britain was the most powerful nation on earth and France was very jealous of this status.
The victory at Yorktown, the last major engagement of the American Revolution that effectively ended the conflict in the American's favor was only possible due to the effective help of French fleet and soldiers.
With Irish men filling the ranks of Washington in one hand and French sailors on the sea in the other hand ?preventing Cornwallis army any resupply and/or escaping solutions ? the British?s defeat was inevitable.
To acknowledge French dominant role in this battle the legend says that claiming he was ill, Cornwallis sent Brigadier General Charles O'Hara to represent him in the surrenders signing ceremony. Approaching the allied leadership, O'Hara attempted to surrender to Rochambeau but was instructed by the Frenchman to approach the Americans.