Somewhere I have read about this, but for the life of me I can't find which book contained the information and I've looked through a bunch. I was correct on the date as I thought it was 1857.

Found this on-line:

On February 15, 1857 the state legislature abolished all musters, designating each male, aged eighteen to forty-five, liable to military service should an emergency for their service arise. The importance of the militia had diminished after the Mexican War and military service only became a matter of vital concern on the outbreak of the Civil War.

Web page where found:

http://www.tngenweb.org/records/henderson/misc/gm/gm3-09.html

Hope this helps some.

Darron