Col. William McCollough accepts a memento representing his time as the commanding officer of 1st Marine Regiment, during a regimental change of command ceremony at Camp Pendleton, Calif., June 10, 2016. McCollough served as the commanding officer of the regiment since September 2014 and relinquished command to Col. Christopher Gideons, who was most recently the current operations officer at I Marine Expeditionary Force. ( Marine Corps photo by Lance Cpl. Shellie Hall/ Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 1st, 1stmardiv, change, command, division, marine, marines, mef