MEU or Floats
A combat zone is an area of operations where military forces conduct armed fighting with enemy forces.
A float deployment is on a Navy ship with Marines and Sailors. The float may have a final destination and drop-off point, or the Marines and Sailors may stay aboard the ship for the duration of the deployment.
Deployment for relief efforts includes aiding other countries in natural disasters such as tsunamis. In some instances, Marines already deployed on a float may be re-directed to relief efforts.
Unit Deployment Program (UDP)
Marines may be deployed to many other countries, including Japan, Australia, and Africa. Marines may also be deployed to other non-hostile countries around the world to maintain operations. As an example, Marines are deployed to various countries around the world to provide security for a number of US Embassies. Deployments to Australia and Japan may include floats to neighboring countries such as the Philippines and South Korea.
UDP is a program designed to increase the training level and unit continuity of Marine Corps units stationed in the continental United States. In most cases, your Marine will go on a float to do different training exercises in different environments.