Lieutenant-colonel meaning

A commissioned rank in the US Army, Air Force, or Marine Corps that is above major and below colonel.
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One who holds this rank.
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(u.s. mil.) An officer ranking above a major and below a colonel.
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An army officer in most countries, ranking below a colonel and above a major. Often the commander of a battalion or the executive officer of a regiment.
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An officer in the United States Marine Corps or Royal Marines, of equivalent rank to their counterparts in the army.
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An officer in the United States Air Force, Air Force Reserve, or Air National Guard, ranking below colonel and above major. Often the commander of a squadron or the executive officer of a wing.
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Alternative form of lieutenant colonel.
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