The following is a release from the U.S. Marines:
Raids are a core skill of MEUs, which combine ground, aviation, and logistics elements and operate aboard U.S. Navy amphibious shipping. MEU’s are capable of a wide variety of missions that also include humanitarian assistance and disaster response, amphibious operations, and crisis response.
The 15th MEU is composed of a command element and three major subordinate elements. They are Battalion Landing Team 3/1, Marine Medium Tiltrotor Squadron 161 (Reinforced) and Combat Logistics Battalion 15, the ground, aviation and logistics elements respectively. The 15th MEU is scheduled to deploy in the spring aboard the USS Essex Amphibious Ready Group which includes USS Essex, USS Anchorage, and the USS Rushmore.