The decision came after the service lost confidence in the commander's ability to lead, according to the Marine Corps.
About 28,500 U.S. troops are stationed in South Korea, but the White House is considering changes to that military footprint.
Squads had grown to 15 Marines during infantry battalion experiments in recent years.
An Army veteran-turned-stand-up comedian discusses the importance of laughter in the wake of trauma.
By Clay Beyersdorfer
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