Tenn. Code Ann. § 58-1-109

Members of the national guard when assigned to state military duty by the commander in chief, or when ordered to active state service pursuant to § 58-1-106, shall be paid from the funds appropriated, or otherwise legally made available to the military department, at the same rate of pay and allowances as are at the time provided for the same grade and ratings in active federal service, except that lesser rates of pay may be prescribed by the adjutant general for personnel on full-time active duty; provided, however, that no member shall receive less than fifty dollars ($50.00) per day. No member shall receive less than fifty-five dollars ($55.00) per day when called to active duty in case of grave emergency under § 58-1-106.