Soon after the advent of Lafayette in the Virginia field, he came into contact with Benedict Arnold in a very curious way. The commander of the opposing British forces had died, and Arnold took his place. About that time Arnold sent a message under a flag of truce to Lafayette. When Lafayette learned that the letter which was brought in was from the traitor, he returned it unopened, sending a verbal message stating that with Benedict Arnold he would hold no communication whatever. Later he sent a formal letter to the officer that had brought the flag, in which he declined all correspondence with Arnold, but added with the utmost courtesy that "in case any other British officer should honour him with a letter, he would always be happy to give the officers every testimony of esteem."
The subject of the letter from Arnold was an exchange of prisoners, a matter that interested him extremely, as he well knew that Lafayette could hardly have pleased the American people better than by presenting Benedict Arnold to them a prisoner. We know that Arnold's mind dwelt on this aspect of his sad situation from the fact that he once quizzed a captured American to find out what the Americans would do with him if they took him prisoner. The soldier audaciously replied that they would "cut off the leg that had been wounded in the country's service and hang the rest of him!" Lafayette's action in regard to the letter from Arnold was very gratifying to Washington; he said that in nothing had Lafayette pleased him more than in refusing to hold communication with Benedict Arnold.
Soon after this Arnold was transferred to New York, and Cornwallis came forward with reënforcements, declaring that he would now "proceed to dislodge Lafayette from Richmond." The struggle between the young French officer (not yet twenty-four years old) in his first attempt at carrying on an independent campaign, and the veteran British commander with years of service behind him, was now taken up with more spirit than ever before. It was the crisis of the Revolution. If the Continental army could only hold out a little longer, it might be possible, by adroit advance and diplomatic retreat, to avoid unequal battles until the foe was worn out or until some favorable opportunity should arise for a direct attack. Cornwallis, of course, despised his exhausted enemy. A letter from him was intercepted and brought into the American camp; in the letter he said, "The Boy cannot escape me!" Lafayette's face must have been set in very grim lines when he read that letter.
Technically, Lafayette had been taking orders from General Greene whose command was in the south and included Virginia. But on the 18th of May, Lafayette was ordered to take the entire command in Virginia and to send all reports directly to General Washington. "The Boy's" letters to Colonel Hamilton show that he fully recognized the gravity of affairs, the responsibility of his position, and the dangers of his own over-enthusiastic spirit. The British command of the adjacent waters, the superiority of their cavalry, and the great disproportion in the forces of the two armies, gave the enemy such advantages that Lafayette dared not venture to engage the British. The British generals thoroughly understood what they called Lafayette's "gasconading disposition," and they relied upon it to work woe to his plans and to contribute to their own glory. His prudence disappointed them as much as it satisfied Washington who had said of Lafayette, "This noble soldier combines all the military fire of youth with an unusual maturity of judgment." Lafayette desired to be worthy of this high praise.
On April 29, Lafayette and his light infantry reached Richmond in time to prevent its capture and to protect the supplies that had been concentrated there. In the battle at Green Spring his bravery led him once more to plunge into the thick of the fight, losing his horse (some reports say two horses) which was shot under him or by his side.
In Wayne's official report on that battle he said that "Lafayette was frequently requested to keep at a greater distance, but his native bravery rendered him deaf to the admonition."
He compelled the admiration of his opponents by his skill in defensive maneuvers. The "Boy" obeyed his commander in chief, and he succeeded in misleading his foe, for Cornwallis believed that the American force was larger than it actually was; he also believed that he could break down the loyalty of the inhabitants of Pennsylvania and of Virginia. In both these points he was direfully mistaken. But Lafayette had high respect for Cornwallis as a general. "His Lordship plays so well," he complained, "that no blunder can be hoped from him to recover a bad step of ours."
Finally, reënforcements did come to Lafayette. In despair the American Congress sent a special messenger express to Paris to bear one more urgent appeal for help. Washington wrote, "We are at the end of our tether; ... now or never our deliverance must come."
Impetuous young John Laurens was chosen to be this Ambassador Extraordinary to France. Laurens was greatly admired and loved by Lafayette and he recommended him to the affections of his noble relatives in Paris. At the moment Laurens's father was being held a prisoner by the British in the Tower of London—a fact that no doubt quickened the zeal of the son. At all events, he was successful in his mission. The French fleet in the West Indies was ordered to the United States and the king himself became surety for several millions of livres in addition to what had already been sent to our aid.
The time was coming when Lafayette could begin to move the British army before him little by little down the York River toward Yorktown, a method of procedure that now became, as the British reports described it, the "constant and good policy of the enemy." On the 24th of September, 1781, Cornwallis proceeded to occupy Yorktown and to strengthen it against attack.