A few brief takeaways:
Since the last report in March 2015, an additional 10 former detainees are suspected of having reengaged in the fight against the United States. 5 of those detainees were released by the Obama administration, bumping the percentage of former detainees released post-January 2009 who are suspected of reengaging from 0.9 percent to 4.9 percent.
One additional detainee released by the Bush administration was confirmed to have reengaged in terrorist activity. In total, 111 of the 532 detainees released by President Bush (20.9 percent) and 6 of the 121 (4.9 percent) released by President Obama have rejoined the fight.
Four detainees that were released by the Bush adminstration and confirmed to have returned to the battlefield have been killed, raising that number from 24 to 28.
Jason Leopold of Vice News has a full run-down on the report.