First published in 1988, this study describes a military operation characterized by multiple - service participation. The author's contribution provides an important analysis of the interplay between state craft and military operational planning and execution. The study addresses not only questions of planning and deployment but the course of the intervention from the landing of marines to evacuate American citizens, through the commitment of the 82d Airborne Division to separate the combatants in the Dominican civil war, to the establishment of the ad hoc Inter- American Peace Force, the First hemispheric military organization of its kind. The United States intervention in the Dominican Republic was successful. It accomplished the mission of preventing a Communist takeover and providing the military presence to make a political settlement possible. Nevertheless, Power Pack experienced its share of problems associated with outdated operations plans, poor communications and coordination, hasty planning, and inadequate staff and facilities. This study's true value lies in the identification of these problems in an effort to understand why they occurred and to prevent their recurrence.