If you are stationed outside of the US and are not in a combat zone, you needed to file an extension to file that would have given you until October 16, 2023 to file the tax return without a late filing penalty. Taxes owed still needed to be paid on or before April 18, 2023 to avoid a late payment penalty.
If your 2022 tax return being filed has a tax refund, there are no penalties for filing after the the due date. You have up to three years to file the tax after the due date of April 18, 2023.
