The purpose of the Sons of the American Revolution is "to perpetuate the memory of those who, by their services or sacrifices during the American Revolution achieved the Independence of the American People".

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Any man of eighteen (18) years or over, who is a lineal descendant of an ancestor who supported the war for American Independence is eligible for membership in the Sons of the American Revolution. These ancestors are referred to as Revolutionary War Patriots and include those persons who fought in the military and/or militia, who provided supplies to the American cause, who served on political bodies supporting the Revolution, who signed oaths of support and similar acts. The Sons of the American Revolution is strictly non-political, and is not associated with any political party or group.

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The Montana Society of the Sons of the American Revolution was formed in 1894.

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More information on how to join, membership qualifications, and genelogical  worksheets are available at the National Society Sons of the American Revolution website at WWW.SAR.Org.