Blue Book (United States Marine Corps)

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Marine Corps Bulletin 1400 (MCBul 1400, commonly called the Blue Book) documents lineal precedence and seniority information on officers in the U.S. Marine Corps and Marine Forces Reserve. It is published annually by the U.S. Marine Corps' Deputy Commandant, Manpower and Reserve Affairs. In addition to determining seniority among officers, it is also used to determine promotion eligibility.

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A private is a soldier, usually with the lowest rank in many armies. Soldiers with the rank of private may be conscripts or they may be professional (career) soldiers.

First lieutenant is a commissioned officer military rank in many armed forces; in some forces, it is an appointment.

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<span class="mw-page-title-main">Service stripe</span> Military insignia

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Blue book may refer to:

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<span class="mw-page-title-main">Royal Navy officer rank insignia</span>

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<span class="mw-page-title-main">United States Marine Corps Reserve</span> Reserve force of the U.S. Marine Corps

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<span class="mw-page-title-main">Junior Reserve Officers' Training Corps</span> US military program

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