This monograph is the first in a planned series of three volumes that will provide Special Operations Forces (SOF) with an in-depth study of resistance movements. Mr. Will Irwin provides a wealth of case studies focused on the United States Government’s support to resistance movements. For each of his case studies the author summarizes in a clear, concise manner the duration of U.S. support, the political environments or conditions, the type of operation, the purpose or objective of U.S. support, and the ultimate outcome: success, partial success, failure, or an inconclusive outcome. Unfolding world events are indicative of the need for SOF to maintain and enhance traditional unconventional warfare (UW) skills, but those skills must be assessed in the context of modern resistance movement dynamics. This work will serve as a benchmark reference on resistance movements for the benefit of the special operations community and its civilian leadership.