Original sentence: The Special Air Service is a Corps of the British Army under the United Kingdom legal system which authorises the raising of military forces and comprises three battalion-sized units, one Regular and two Territorial Army (TA), each styled as 'regiments' in accordance with British Army practice; 22 Regiment SAS being the Regular unit, with 21 Regiment SAS (Artists) and 23 Regiment SAS as the TA units, known together as the Special Air Service (Reserve) or SAS(R).Under the Operational Command (OPCOM) of the Director Special Forces
Edited sentence: Each is styled as a 'regiment' in accordance with British Army practice; 22 Regiment SAS being the Regular unit and 21 Regiment SAS (Artists) and 23 Regiment SAS being the TA units, known together as the Special Air Service (Reserve) or SAS(R).Each sabre squadron contains about 60 men and each troop has about 16 "troopers" who are led by a Captain.The Special Air Service is a Corps of the British Army under the United Kingdom legal system which authorises the raising of military forces and comprises three battalion-sized units, one Regular and two Territorial Army (TA).Within each troop there is also a HQ element which comprises of officers and support staff