Constant cavalry and naval skirmishing had been going on since March 21. Confederate casualties, including the cavalry skirmishing on May 4, were 1,682. After minor skirmishing the Federals withdrew. Cavalry proper is described as used for skirmishing. Skirmishing and sallies by the garrison continued through the month of February. They were exceptionally fast and manoeuvrable, ideal for scouting, skirmishing, harassment, ambushing and pursuit. This skirmishing was the traditional function of light infantry. Sheridan spent the next several months occupied with light skirmishing and fighting guerrillas. The Scots Greys began the following year by conducting patrols and skirmishing with French troops. Several weeks of siege punctuated by skirmishing followed. A battle usually opened with light troops skirmishing with the opposition. There was fitful skirmishing in the streets of Winchester. The war to the west of the Appalachians was largely confined to skirmishing and raids. The spring of 1192 saw continued negotiations and further skirmishing between the opposing forces. Optimized for maximum mobility and speed, they were intended for reconnaissance and skirmishing.