To ensure that you get the military discount, review your entries in the personal info section.
On the next screen you will see the message: Yes! You qualify for our enlisted military discount.
Refer to the TurboTax Blog TurboTax Offers Free Tax Filing for Military Active Duty and Reserve.
Also be aware that there is a screen soon after the military W-2 entry that asks something like "Does your W-2 have any of these uncommon situations?" and has about 10-11 check boxes. You have to check the box there (for a second time) that you are Active Duty. I know you were also asked to indicate Active Duty in the My Info section. But it also asks again after the W-2. I know that seems redundant to have to indicate it twice..