Public Affairs Marines must be trained, equipped and postured to serve the Force Commanders as they execute their duties in keeping Marines and the American people informed of what is happening on the battlefield as well as aboard Marine Corps bases.

To accomplish their mission, Public Affairs Marines must have a sound understanding of the organization, tactics and equipment used in war and other conflicts. They must be ingrained within the Commander's battle staff and must train side-by-side with the warfighting units. In peacetime and in war, the Public Affairs mission is to inform America's citizens about what their Marines are doing.