Marines Detachment Commanding Officer

Major Joshua S. Diddams

Commanding Officer, Marine Detachment Ft. Meade

Major Diddams graduated from Virginia Polytechnic Institute and State University in 2007 with a Bachelor of Arts in History. He commissioned as a Second Lieutenant through the University’s Naval Reserve Officers Training Corps program the same year. Following graduation of The Basic School, Major Diddams reported to the Defense Information School, Ft. Meade, Md., for enrollment in the Public Affairs Qualification Course.

Major Diddams was then assigned to the Media Branch of Headquarters Marine Corps Division of Public Affairs at the Pentagon. For three years, he served as the PAO on issues such as Marine Corps Aviation, the office of the Inspector General, Programs and Resources, Safety Division, Plans Policies and Operations, and others. During this time he worked with myriad national and international media representatives on issues such as procurement, operations, investigations, and crisis response.

During his tour at the Pentagon, Major Diddams deployed to Afghanistan in support of Operation Enduring Freedom with the 2nd Marine Expeditionary Brigade. While deployed, he worked with various NATO nations to coordinate public affairs efforts throughout southwest Afghanistan. In preparation for his deployment, Major Diddams returned to the Defense Information School to attend the Joint Expeditionary Public Affairs Course. 
From July 2011 to June 2012, Major Diddams attended San Diego State University as part of the Marine Corps’ special education program and received a Master of Arts degree in Mass Communication and Media Studies.

From June 2012 to June 2015, Major Diddams assumed duties as the 11th Mare Expeditionary Unit’s public affairs officer. Prior to the MEU’s deployment, he deployed to the Philippines where he served as the Public Affairs Liaison for Marine Forces Pacific at the U.S. Embassy Manila and participated in the coordinated response in the aftermath of Typhoon Haiyan. While deployed with the MEU to the western Pacific, Major Diddams led public affairs efforts in Malaysia, Hong Kong, Singapore, Kuwait, and Saudi Arabia.

He reported to the Defense Information School in June 2015 where he was an instructor and team leader in the Public Affairs Leadership Department until April 2017.

In May 2017 he assumed command of the Marine Detachment, Ft. Meade.


2006 Officer Candidates School, Quantico, VA
2007 B.A. History, Virginia Polytechnic Institute and State University, Blacksburg, VA
2008 The Basic School, Quantico, VA
2008 Public Affairs Qualification Course, Fort George G. Meade, MD
2009 Joint Expeditionary Public Affairs Course, Fort George G. Meade, MD
2012 M.A. Mass Communication, San Diego State University, San Diego, CA
2013 Expeditionary Warfare School
2014 ARG/MEU Staff Planning Course, Coronado, CA