This series primarily consists of command chronologies of U.S. Marine Corps units that served during the time of the Vietnam Conflict, and includes the records of those units that served in Vietnam as well as domestically and throughout the world. Most of these chronologies include four common sections of information: organizational data, narrative summaries of events, accomplishments and losses, sequential listings of significant events within the unit, and supporting documentation. More extensive chronologies include lists of commanders, lists of staff officers, lists of location(s) where units were stationed, lists of awards and training received, lists of operations participated in, situation reports, and records relating to community relations activities.