Indiana Code Title 10. Public Safety § 10-16-11-8

Sec. 8. (a) An officer or a member of the Indiana national guard may not receive any compensation for duty at drills, parades, or encampments unless personally present for the duty, whether excused or not.  A substitute for the member may not receive compensation.

(b) Officers and members shall sign payrolls before the last day of services for duty performed.  The signature of a soldier shall be made in the presence of the member's commanding officer.  If the member signs by mark, the mark must be attested to by the officer.

(c) The payrolls described in subsection (b) shall be prepared and submitted according to the orders and regulations of the state military department.