This forced Sheridan's cavalry to face three enemy divisions&colon; two infantries and one cavalry. Important places in Constantinople were occupied by these armed infantries with civilian clothes. These infantries were used in most of the Empire's sieges, demolishing enemy fortifications and defences. In 1318, San Lorenzo supported with 25 infantries Orvieto against Ugolinuccio de' Neri of Montemarano. The Almogavars were considered one of the best infantries of their era. The Army and Marine infantries decreased in size. Recreational skiing began with organized skiing exercises and races of the Norwegian and Swedish infantries. The fife was a standard instrument in European infantries by the 16th century.