When was the Marines Advanced Base Force formed?
Advanced Base Force
In June 1913 the Advanced Base Force brigade was formed, composed of two permanently organized regiments, the Fixed Defense Regiment and the Mobile Defense Regiment. Each regiment was tailored to its specific part in the advanced base force concept. At the same time, numerical designations for companies were adopted to alleviate the problem of having more than one company A, for example, in any units of an expeditionary force. On 23 December 1913, the brigade was redesignated as the 1st Advance Force Brigade, and again on 1 April 1914, as the 1st Brigade. The 1st Brigade was deactivated on 15 August 1934, after participating in the Occupation of Haiti from August 1915 until August 1934.[20]