L-hour Definition - MilitaryDictionary.org
1.) The specific hour on C-day at which a deployment operation commences or is to commence.
2.) In amphibious operations, the time at which the first helicopter or tiltrotor aircraft of the airborne ship-to-shore movement wave touches down or is scheduled to touch down in the landing zone.
In the United States, military vocabulary is standardized by the Department of Defence. These terms are used by the United States Army, Navy, Air Force, and Marine Corps.
Term Classification: operations
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