But though the French became masters of the ports, the army of the blacks maintained itself in the mountain fastnesses, in which Toussaint defied all the efforts of his foes. After Leclerc had lost heavily, and began to despair of subduing his able opponent by force of arms, he had recourse to strategy. He had brought with him Toussaint’s two sons. Napoleon had interviewed these boys before their departure from France, saying to them, "Your father is a great man, and has rendered good service to France. Tell him I say so, and bid him not to believe I have any hostile intention against the island. The troops I send are not designed to fight the natives, but to increase their strength, and the man I have appointed to command is my own brother-in-law." Leclerc sent these boys to Toussaint, with the demand that he should submit or send his children back as hostages. An affecting interview took place between the boys and their father, and when they repeated to him Napoleon’s words, he was at first inclined to yield, but fuller consideration induced him to refuse. "I cannot accept your terms," he said. "The First Consul offers me peace, but his general no sooner arrives than he begins a fierce war. No; my country demands my first consideration. Take back my sons." In the continuation of the war a French force of twenty thousand men under Rochambeau marched against Toussaint, who was strongly intrenched at Crête à Pierrot. In the contest that followed Toussaint at first outgeneralled Rochambeau and defeated him with severe loss. But the assistance he looked for from his subordinates failed to reach him, and at length he was forced to retreat. The French, however, despite their superior numbers and the military experience of their leaders, found that they had no mean antagonist in the negro general, and Leclerc again resorted to negotiation, offering the blacks their freedom if they would submit. Toussaint, seeing that he was unable to hold his own against his powerful foe, and convinced that the terms offered would be advantageous to his country, now decided to accept them, saying, "I accept everything which is favorable for the people and for the army; as for myself, I wish to live in retirement." The negro liberator trusted his enemies too much. The pride of Napoleon had not yet digested the affront of Toussaint’s message, "From the First of the Blacks to the First of the Whites," and he sent orders to Leclerc to arrest and send him to France. In June, 1802, a force was sent secretly at night to Toussaint’s home, where he was dwelling in peace and quiet. The house was surrounded, two blacks that sought to defend him were killed on the spot, and he was dragged from his bed and taken to the coast. Here he was placed on board a man-of-war, which at once set sail for France.