Here are Indiana's rules regarding taxation of military servicemembers:
https://www.in.gov/dor/files/ib27.pdf
If your military SLR (State of Legal Residence) is Indiana, then in the Personal Info section of TurboTax, be sure you enter Indiana as your State of Residence. If your only income is your military pay, answer NO to the questions about living in another state or having income from another state.
If your SLR is Indiana, make sure the military withholds IN state taxes from your pay.