From the Executive Summary: "The Afghan National Defense and Security Forces (ANDSF) have begun their third year in the lead for security in Afghanistan and the second year in which they have full security responsibility with limited U.S. or coalition support on the battlefield. During the December 1, 2015, to May 31, 2016, reporting period, the ANDSF addressed key capability gaps as they recovered from a tough 2015, maintained a high operational tempo during the winter months amidst challenging security conditions, and developed and began to implement an offensive campaign plan as they headed into the traditional spring and summer fighting season. [...] Consistent with the President's October 2015 announcement that U.S. forces would maintain a force posture in Afghanistan of up to 9,800 military personnel through most of 2016, USFOR-A [United States Forces - Afghanistan] maintained its forces at or below this level throughout the reporting period.1 These U.S. forces served alongside approximately 6,876 forces from NATO Allied and partner nations who are committed to Afghanistan's continued development. In particular, the continued U.S. and coalition presence in Afghanistan is focused on making progress in developing the ANDSF into a more effective, sustainable, and affordable force that can protect the Afghan people and contribute to regional and international security. This force presence will also help prevent threats to the homeland, U.S. allies, and U.S. interests abroad from terrorist actors in the region, particularly al Qaeda, and it will maintain pressure on other terrorist groups such as IS-K [Islamic State - Khorasan]."
Defense Technical Information Center (DTIC): http://www.dtic.mil/dtic/