On June 19, 1778, Washington's troops finally left Valley Forge. An excerpt from the article:
"Washington received key support from several officers. General Henry Knox wholeheartedly agreed with his choice of Valley Forge as the army's winter encampment and built fortifications on its hills to defend against British attacks. Two younger generals—Nathanael Greene and Anthony Wayne—took on the humiliating task of scouring the countryside for horses, cattle, sheep, and hogs for the Continental Army at their commanding general's request.
The Marquis de Lafayette, a young French nobleman, organized officers from France, Poland, and other European nations into the Corps d'Étrangers. Baron Friedrich von Steuben, a Prussian military officer, provided important training for the American troops. As the drillmaster of Valley Forge, he taught the soldiers how to use the bayonet, and most importantly, how to re-form lines quickly in the midst of battle. Washington also received help from his wife Martha who arrived from Mount Vernon in February. She took over the management of his household, helped with his correspondence, and cheered him by entertaining guests.
By the early spring conditions at Valley Forge greatly improved. Washington appointed General Greene as the new Quartermaster General and he set up an efficient operation for bringing supplies into the camp. The rainy weather continued to be a problem, but the mood of the camp brightened when news of the Franco-American alliance arrived in May. Washington ordered his troops to line the parade ground and shoot off their guns one by one in celebration.
Finally, on June 19, the Continental Army—better trained and more determined than ever—marched out of Valley Forge. Washington, who proved his leadership, remained their commander. Together they headed for New Jersey where they would make a stand against the British army, on its way from Philadelphia to New York, at Monmouth Courthouse."
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