 As the group crossed a river in a deep ravine on the night of October 24, they were suddenly fired upon from three sides by about 400 Haitian rebels, known as "Cacos", concealed in the bushes about from Fort Dipitie.The Marines fought their way forward to a good position and maintained it throughout the night despite continuous hostile fire.At dawn, three squads of Marines commanded by Ostermann, Captain William P. Upshur, and Gunnery Sergeant Daniel Daly advanced in three different directions, surprising and scattering the Cacos in all directions.