Marines say for the first time the Afghan national flag has been raised in former Taliban-held territory.
Afghan officials hoisted the flag over the remains of a 300-year old fort in the southern reaches of Helmand Province.
Camp Lejeune Marines seized power in that area last week.
"The number one question we get from the people is, 'when are you leaving?'" said Brig. Gen. Larry Nicholson, commanding general of Marine Expeditionary Brigade-Afghanistan. "The answer is we're not leaving until the transition for security is made to the provincial government, to include the Afghan forces."