Ohio Rev. Code Ann. § 5923.21 – Call to service by governor

(A) The Ohio organized militia may be called by the governor by proclamation to aid the civil authorities to do any of the following:
1. (1) Execute the laws of this state;
2. (2) Suppress insurrection;
3. (3) Repel invasion;
4. (4) Act in the event of a disaster, as defined in section 5502.21 of the Revised Code, within the state;
5. (5) Promote the health, safety, and welfare of the citizens of this state.
(B) In all cases, the organized militia shall be called to state active duty before the unorganized militia.
(C) The governor's proclamation under division (A) of this section shall specify the statutory basis of the call.