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The following are the original service numbers which were first issued to United States military personnel: [2] R-1: Arthur Crean – First service number of the United States armed forces; O-1: John J. Pershing – First officer service number of the United States Army; 100 00 01: Clayton Aab — First enlisted service number of the United ...
During World War II, the officer service number range was extended to 50,000 and, during Korea, extended again to 100,000; this number was not reached by the officer corps until 1966. At that time, the Marine Corps extended the officer service numbers a final time to 125,000. Officer service numbers were then discontinued in 1972.
A military service number of the Regular Army. Service numbers were used by the United States Army from 1918 until 1969. Prior to this time, the Army relied on muster rolls as a means of indexing enlisted service members while officers were usually listed on yearly rolls maintained by the United States War Department.
The specific time at which deployment for an operation commences. (US) L-Day For "Landing Day", 1 April 1945, the day Operation Iceberg (the invasion of Okinawa) began. [5] M-Day The day on which mobilization commences or is due to commence. (NATO) N-Day The unnamed day an active duty unit is notified for deployment or redeployment. (US) O-Day
During the Second World War, Navy officer service numbers were extended to 350,000; these numbers were simply issued by entry date into the Navy officer corps without regard to membership in the Regular Navy or United States Navy Reserve. In 1945, with the service number cap now reached, the Navy extended officer service numbers again to 600,000.
As with four-star officers, the U.S. Code explicitly limits the number of three-star officers that may be on active duty at any given time. The total number of active-duty general or flag officers is capped at 219 for the Army, 150 for the Navy, 171 for the Air Force, 64 for the Marine Corps, and 21 for the Space Force. [ 204 ]
A general officer is an officer of high military rank; in the uniformed services of the United States, general officers are commissioned officers above the field officer ranks, the highest of which is colonel in the Army, Marine Corps, Air Force, and Space Force and captain in the Navy, Coast Guard, Public Health Service Commissioned Corps (PHSCC), and National Oceanic and Atmospheric ...
The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, and the state of Quintana Roo in Mexico. Eastern Standard Time ( EST ) is five hours behind Coordinated Universal Time ( UTC−05:00 ).