The American cavalry was there to support the British and French, but the cavalry unit was less useful during World War I due to the advances in technology. The Cavalry unit mainly were involved in helping with transporting messages and materials, helping locating the enemy and strategizing, and finally any police duties involved with the military. Some cavalry units were dissolved and created into field artillery units. Having a cavalry unit was a major advantage in some ways compared to being on foot. This would reduce the amount of casualties due to the speed of being on a horse compared to being on foot. America only had one cavalry unit which was the 2nd U.S. Cavalry Regiment. The cavalry unit had a huge impact on the defensive of the strategies used. The U.S. Cavalry Unit was the only unit that received two firearms. After the attack, they decided on the regulations for the 2nd U.S. Cavalry Unit which included: Each troop would have six automatic rifles, they would have enough horses to carry the firearms, and fifty men in the troops would be given grenades. The 2nd Cavalry Unit had 14 officers and 302 troopers. The Cavalry, being the only one in the U.S. had unique roles and were given opportunities that were unique only to the cavalry.