 The Brazilian marine special operations COMANF also originated with Royal Marines mentoring.Other British units, such as the SAS, led to the development of many international special operations units that are now typically referred to as commandos, including the Bangladeshi Para-Commando Brigade, Pakistani Special Services Group, the Indian MARCOS, and the Jordanian special forces.During the winter of 1914–1915 large parts of the Eastern Front switched to trench warfare.