The American Legion, commonly known as the Legion, is a nonprofit organization of U.S. war veterans headquartered in Indianapolis, Indiana. It is made up of state, U.S. territory, and overseas departments, and these are in turn made up of local posts. The organization was formed on March 15, 1919, in Paris, France, by a thousand officers and men of the American Expeditionary Forces (A. E. F.), and it was chartered on September 16, 1919, by the United States Congress.

~https://www.wikiwand.com/en/American_Legion

Preamble of the Constitution of The American Legion

For God and Country,
We associate ourselves together
For the following purposes:
To uphold and defend
The Constitution of the United States of America;
To maintain law and order;
To foster and perpetuate
A one hundred percent Americanism;
To preserve the memories and incidents
Of our associations in an all wars;
To inculcate a sense of individual obligation
To the community, state and nation;
To combat the autocracy
Of both the classes and the masses;
To make right the master of might;
To promote peace and good will on earth;
To safeguard and transmit to Posterity
The principles of Justice, Freedom and Democracy;
To consecrate and sanctify our comradeship
By our devotion to mutual helpfulness.