Camp Leatherneck, the largest U.S. base to be handed over to Afghan control, and Camp Bastion together formed the international coalitions regional headquarters for the southwest of Afghanistan, housing up to 40,000 military personnel and civilian contractors.
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U.S. Marines stand at attention during a handover ceremony, as the last U.S. Marines unit and British combat troops end their Afghan operations, in Helmand October 26, 2014.
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