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Legion of Merit

Legion of Merit is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Legion of Merit rather than just read about it. In short: The Legion of Merit (LOM) is a military award of the United States Armed Forces which is given for exceptionally meritorious conduct in the performance of outstanding services and achievements. The decoration is issued to members of the eight uniformed services of the United States as well as to military and political figures of foreign governments.

Legion of Merit — main illustration
Legion of Merit — illustration

Key takeaways

  • Legion of Merit belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Legion of Merit to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Legion of Merit from memory before moving on to harder problems.

Reference excerpt

The Legion of Merit (LOM) is a military award of the United States Armed Forces which is given for exceptionally meritorious conduct in the performance of outstanding services and achievements. The decoration is issued to members of the eight uniformed services of the United States as well as to military and political figures of foreign governments. The Legion of Merit (Commander degree) is one of only two United States military decorations to be issued as a neck order (the other being the Medal of Honor), and the only United States military decoration that may be issued in degrees (much like an order of chivalry or certain orders of merit), although the degrees including a neck ribbon are only awarded to non-U.S. nationals. The Legion of Merit is seventh in the order of precedence of all U.S. military awards and is worn after the Defense Superior Service Medal and before the Distinguished Flying Cross. In contemporary use in the U.S. Armed Forces, the Legion of Merit is typically awarded to Army, Marine Corps, Air Force, and Space Force general officers and colonels, and Navy and Coast Guard flag officers and captains occupying senior command or very senior staff positions in their respective services. It may also be awarded to officers of lesser rank, senior warrant officers (typically in command positions at the rank of chief warrant officer 5), and to very senior enlisted personnel (typically in the rank of command sergeant major and Sergeant Major of the Army in the Army, fleet master chief petty officer and Master Chief Petty Officer of the Navy in the Navy, command chief master sergeant and Chief Master Sergeant of the Air Force in the Air Force, command chief master sergeant and Chief Master Sergeant of the Space Force in the Space Force, and Sergeant Major of the Marine Corps in the Marine Corps), but these instances are less frequent, typically by exception, and the circumstances vary by branch of service. Authority to award the Legion of Merit is reserved for general officers and flag officers in pay grade O-9 (i.e., lieutenant general, vice admiral) and above, civilian Department of Defense personnel at assistant service secretary or Assistant Secretary of Defense level and above, or equivalent secretary-level civilian personnel with the Department of Homeland Security with direct oversight of the U.S. Coast Guard.

Criteria The degrees of Chief Commander, Commander, Officer, and Legionnaire are awarded only to members of armed forces of foreign nations under the criteria outlined in Army Regulation 672-7 and is based on the relative rank or position of the recipient as follows:

Chief Commander: Head of state or government. However, this degree was awarded by President Roosevelt to some Allied World War II theater commanders, usually for joint amphibious landings or invasions. (The President had this power under Executive Order 9260 of October 29, 1942, paragraph 3b.) Commander: Equivalent of a U.S. military chief of staff or higher position, but not to a head of state. Officer: General or flag officer below the equivalent of a U.S. military chief of staff; colonel or equivalent rank (e.g., Navy or Coast Guard captain) for service in assignments equivalent to those normally held by a general or flag officer in U.S. military service; or military attachés. Legionnaire: All recipients not included above. When the Legion of Merit is awarded to members of the uniformed services of the United States, it is awarded without reference to degree. The criteria are "for exceptionally meritorious conduct in the performance of outstanding services and achievements" and is typically reserved for senior officers at O-6 level and above, typically in connection with senior leadership/command positions or other senior positions of significant responsibility.

The performance must have been such as to merit recognition of key individuals for service rendered in a clearly exceptional manner. Performance of duties normal to the grade, branch, specialty, or assignment, and experience of an individual are not an adequate basis for this award. For service not related to actual war, the term "key individual" applies to a narrower range of positions than in time of war and requires evidence of significant achievement. In peacetime, service should be in the nature of a special requirement or of an extremely difficult duty performed in an unprecedented and clearly exceptional manner. However, justification of the award may accrue by virtue of exceptionally meritorious service in a succession of important positions. The degrees and the design of the decoration were influenced by the French Legion of Honour (Légion d'honneur).

History

World War II Although recommendations for the creation of a medal for meritorious service were initiated as early as September 1937, no formal action was taken toward approval. In a letter to the Quartermaster General (QMG) dated December 24, 1941, the Adjutant General formally requested that action be initiated to create a meritorious service medal and provide designs in the event the decoration was established. Proposed designs prepared by Bailey Banks and Biddle and the Office of the Quartermaster General were provided to the Assistant Chief of Staff for Personnel (Colonel Heard) by the QMG on January 5, 1942. The Assistant Chief of Staff (G-1), Brigadier General John H. Hilldring, in a response to the QMG on April 3, 1942, indicated the Secretary of War had approved the design recommended by the QMG. The design of the Legion of Merit (change of name) would be ready for issue immediately after legislation authorizing it was enacted into law. (A separate medal called the Meritorious Service Medal was established in 1969.) An act of Congress (Public Law 671, 77th Congress, Chapter 508, 2d Session) on July 20, 1942, established the Legion of Merit and provided that the medal "shall have suitable appurtenances and devices and not more than four degrees, and which the President, under such rules and regulations as he shall prescribe, may award to

… excerpt ends here. Continue reading the full article.

Illustrations

Legion of Merit illustration
Legion of Merit illustration
Legion of Merit: Legion of Merit with golden "V" device (as used by USN and USMC) denoting combat bravery. The "V" device ceased being awarded with the Legion of Merit in 2017.
Legion of Merit with golden "V" device (as used by USN and USMC) denoting combat bravery. The "V" device ceased being awarded with the Legion of Merit in 2017.
Legion of Merit: Legion of Merit award certificates
Legion of Merit award certificates
Legion of Merit illustration

Worked examples

Example 1 — a first encounter with Legion of Merit

Start with the simplest possible case. Write down what Legion of Merit claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Legion of Merit before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Legion of Merit ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Legion of Merit

In research
Legion of Merit appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Legion of Merit in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Legion of Merit is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1942 establishments in the United States, Awards and decorations of the United States Air Force, Awards and decorations of the United States Army, so understanding it makes those chapters shorter.
In everyday life
Look for Legion of Merit outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Legion of Merit in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Legion of Merit means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Legion of Merit out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Legion of Merit in simple terms?

The Legion of Merit (LOM) is a military award of the United States Armed Forces which is given for exceptionally meritorious conduct in the performance of outstanding services and achievements. The decoration is issued to members of the eight uniformed services of the United States as well as to mi…

Why does Legion of Merit matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Legion of Merit?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Legion of Merit.

Tags

  • 1942 establishments in the United States
  • Awards and decorations of the United States Air Force
  • Awards and decorations of the United States Army
  • Awards and decorations of the United States Coast Guard
  • Awards and decorations of the United States Marine Corps
  • Awards and decorations of the United States Navy
  • Awards and decorations of the United States Space Force
  • Awards established in 1942
  • Military awards and decorations of the United States
  • Recipients of the Legion of Merit

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