Lee's conduct would probably have passed unnoticed had he not, in a letter to Washington, endeavored to defend himself, while he demanded the grounds which called forth the remarks addressed to him on the battlefield. The letter was written in a highly improper spirit, and the result was a court-martial, that found Lee guilty of disobedience of orders, misbehavior before the enemy, and disrespect of the commander-in-chief. For these reasons he was suspended from command for twelve months, and before he was again ordered to service he was dismissed from the army for having written an impertinent letter to Congress. Before leaving Valley Forge, Washington directed General Arnold, who had not fully recovered from the wounds received at Saratoga, to proceed to Philadelphia and take military command of the city. The duties assigned him were of a delicate nature. Congress had ordered that when the Americans took possession of the city no goods should be sold or removed until their ownership had been decided upon by a properly constituted commission. The object of this was to secure for the army such goods as the British and Tories might have abandoned or parted with at nominal prices to their friends. In his instructions to Arnold, Washington had referred him to the resolutions of Congress for his guidance, and had urged him to take every step in his power to preserve tranquillity and give security to individuals of every class until the restoration of civil power. Arnold arrived on the morning of the 19th of June, and with the approbation of several of the principal citizens issued a proclamation that closed the stores and suspended business. It also commanded the citizens to make returns to the town major of goods in their possession, beyond those needed for family use, that the purchasing agents of the army might contract for those they required. The temptation to benefit himself by the power he now exercised was greater than Arnold could withstand, and three days after he issued his first proclamation he entered into an agreement with the clothier-general of the army and another individual, that all goods purchased for the public and found to be superfluous should be charged to them and sold for their joint account. It soon became noised about that Arnold was personally interested in the purchases ostensibly made for the government, and although the secret of the agreement was preserved until after his treason, the knowledge of his speculations in Montreal gave such a color of truth to the rumor that the community were greatly dissatisfied: besides, he took up his abode in a spacious mansion on Market Street, formerly the residence of Governor Penn, which Howe had just vacated, and entered upon a style of living far beyond his means.