There is not a tax deduction for being military disabled. If you only have VA disability benefits, then you would not need to file a return. If you have other income, that causes you to need to file a return, then that income is taxed normally. You would simply not include the VA disability benefits on the return. This would keep this income from being taxed.
All deductions and credits that you can claim would be listed under the deductions and credits section. You can go one by one or let TurboTax walk you through them. If you want to see them all, you would be better to choose I'll pick and choose this will let you walk through each and everyone of them.