Complex sentence: Through the BRACC, he helped determine privatization methods appropriate for each of the military bases and installations, which were slated by the US Secretary of Defense for closure through full divestiture, merger with other military bases and facilities, base conversion and realignment.
Split into simpler sentences: Through the BRACC, he helped determine privatization methods appropriate to each of the military bases and installations, which were slated by the US Secretary of Defense for closure. They included full divestiture, merger with other military bases and facilities, base conversion and realignment.