Complex sentence: The two CJSOTFs are CJSOTF-Arabian Peninsula, whose headquarters directs United States Army Special Forces, and CJSOTF Afghanistan, whose headquarters has been provided in rotation by a number of Army Special Forces Groups, including the 3rd and the 19th.
Split into simpler sentences: The two CJSOTFs are CJSOTF-Arabian Peninsula, whose headquarters directs United States Army Special Forces and CJSOTF Afghanistan. CJSOTF Aghanistan's headquarters has been provided in rotation by a number of Army Special Forces Groups, including the 3rd and the 19th.