Martial law comes at the president's own request and Borno signs

Hostility in the capital ran against Dartiguenave as much as against the Americans. He had sat in the Senate in 1914 when members nearly lynched Joseph Justin for proposing a foreign overseer. On 2 September 1915 he privately asked the Americans to impose martial law, and Caperton did so the following day. What followed was a limited military government on the model of the American occupation of Veracruz. Provost courts tried political offenders and anyone charged with an offence against the occupation. A decree announced that press freedom would stand, while false or incendiary writing against the American or Haitian governments would go before military courts. Haitian journalists knew such rules from every government they had lived under. The difference was that the men making and enforcing them now were foreigners, and would be for years. On 16 September Louis Borno, who had replaced Sannon at the foreign ministry, signed the treaty. The next morning the U.S.S. Washington fired a twenty one gun salute and the city learned that Dartiguenave's government had American recognition.

On 28 July 1915 a crowd broke into the French embassy in Port-au-Prince, found President Vilbrun Guillaume Sam hiding in a bathroom, dragged him into the street and tore him to pieces. The day before, Sam had ordered the killing of 167 political prisoners taken from elite families, among them the former president Oreste Zamor. Those executions produced the rising that killed him. In Washington, Woodrow Wilson learned of it and feared that Rosalvo Bobo, whom his advisers took for a German sympathiser, would take power. On 29 July he ordered the Marines to occupy Haiti. The stated reason was humanitarian, the restoring of order in a country said to be incapable of governing itself. The working reasons were strategic: keeping Germany out of the Caribbean during the European war, holding the Windward Passage that guards the approach to the Panama Canal, and protecting American money already placed in Haiti. The occupation ran nineteen years. A century of Haitian self government, disorderly as it had been, ended inside a week.

Churchstone-Lord told the Chicago Defender that if the United States meant to keep its protectorate over Haiti, Haitians would rather have Black American troops. White troops, he said, were arrogant and known for their contempt toward Haitians, women and girls in particular. The request measured what people expected to survive. Under a foreign army that was going to stay, the only choice on offer was which soldiers were least likely to read Haitian skin as permission. His report put a structure of rape, assault and murder in front of an American public with no other way of learning about it. Few of the incidents were ever investigated by the marines or by the gendarmerie. Haitians moved the information themselves, by word of mouth, in newspapers and journals, in open letters, and where it was possible through courts martial. Churchstone-Lord learned about the dead girls through those channels and sent the story north. The Black press in the United States did the work of a court of inquiry because there was no court of inquiry.

Charlemagne Masséna Péralte of Hinche was a graduate of Saint Louis de Gonzague, a former commandant de la place at Port-de-Paix and at Léogâne, and a brother in law of Oreste Zamor, which made him an enemy of Dartiguenave. In early 1918 he was convicted of taking part in a night raid on Gendarmerie headquarters at Hinche, where a payroll of twelve thousand dollars had just arrived. Caught at Ouanaminthe before he could reach the border, he was sentenced to five years of hard labour in the civil prison at the Cap and set to sweeping the gutters under guard. On 3 September 1918 he persuaded his guard to run with him into the mountains behind the Plaine du Nord. He gathered Bobo's old Cacos and Zamorist bands from Hinche and declared war to drive the invaders into the sea. On the night of 17 October a hundred Cacos wearing the scarlet badge of Ogoun attacked Hinche and lost thirty five dead to a garrison that had been warned. On 10 November sixty of them took Maïssade.