First , Thank you so much for your service, I am very sorry that you like many other service members see things that cause emotional distress and can be a lifelong battle
I don't have magic words for you, but I do know that with the right treatments and therapy you can certainly get to a place in life that you will be able to enjoy day to day living and have a good outlook.
As for your spouse and her inability to be supportive , well that's a shame and I hope that you and her can seek couples therapy so that she can learn about your struggle and learn how to be supportive and also keep herself mentally healthy during your ups and downs.
Certainly get in touch with your Pdoc asap and work on finding a medication(s) that will be a good fit for you. Stay focus in your Therapy don't give up on feeling better, day by day , baby steps add up.
Welcome to PC