The identity of the deceased Marine is being withheld pending next-of-kin notification.
The Marine Corps is requesting eight new ships over the next five years for its new littoral regiments.
Japan, South Korea, Taiwan and the Philippines are developing similar ways to fight concealed across island chains.
Lt. Col. Christopher O’Melia was relieved of command of 1st Battalion, 4th Marine Regiment, by the commanding general of 1st Marine Division.
The incident, which took place outside near barracks aboard Camp Lejeune, North Carolina, left no reported injuries.
Sailors and Marines deployed with the group spent nearly nine months deployed before coming home this week.
Troops are looking at the Arctic to counter ongoing efforts by Russia and China there.
The special-operations-capable 26th Marine Expeditionary Unit, embarked across three Navy ships, left the Mediterranean Sea on Tuesday.
Long-range rocket systems previously assigned to 5th Battalion, 11th Marines, will be moved within the 11th Marine Regiment.
The hospital where the Marines were sent had been planning a mass-casualty response training for the day of the real-life emergency.
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