The success of any operation depends on proper embarkation planning and execution, whether movement is by land, sea or air. For units to rapidly deploy, commanders must ensure their units maintain the highest degree of embarkation readiness at all times. Marine Corps Reference Publication (MCRP) 4-11.3G, Unit Embarkation Handbook, addresses the doctrine, techniques, and procedures for effectively managing a unit embarkation program and planning and executing embarkation operations. In the case of amphibious embarkation operations, a Marine expeditionary unit (MEU) is used as an example throughout.