of his suspicions. With Crazy Horse, he led forces north across the river to drive Company E and F due north up present-day Calhoun Couley to present-day Finley Ridge. There they forced three of Custer's companies to fight a largely defensive battle. Within minutes, Gall and his forces took a position north east of Finley Ridge and poured a withering fire down on Companies C, I and L. When Crazy Horse charged through an opening between Lt Calhoun's Company L and Company I in a sudden surprise right envelopment attack, Company L probably began to pull back off the ridge to try to link up with Company I. Companies C and L's tried to redeploy from holding off Gall's men to the east and others to the south. This probably looked like a panicked retreat to Gall and his forces. Seeing that the two Cavalry companies no longer had the fire superiority that held the Native Americans at bay, Gall and his men attacked from the east as the other Indians attacked the cut-off elements of Company C from both the east and the south. They soon finished off Companies C and L, and forced survivors and some of Company I to flee towards Custer and his men north of the so-called "Last Stand Hill." A few of the soldiers of Companies C, I and L also fled south toward the river. The places where they fell were later marked by white marble monuments, which still stand. Soon the Native Americans finished off Custer and his men in the remaining companies C, E, and F. The last approximately 28 survivors made a dash south for the river. They were trapped in the box canyon called "Deep Ravine". After killing them, the Indians had won the battle, having completely annihilated Custer's five companies. In later years, Gall recounted his role in the battle. He had mistakenly thought the survivors of Custer's three southeastern companies fled northwest to Custer because they ran out of ammunition. The horse soldiers may also have fled after losing their will to fight, as many men simply ran, even abandoning loaded rifles. The Sioux and Cheyenne picked these up and fired the weapons to drive off the soldiers' horses, thus depriving them of a key tactical mobility advantage. The native warriors' attacking Greasy Grass Ridge from the southeast came mostly on foot. Gall kept up enfilading fire