What to do

I was dating a girl for 3 years and and 3 weeks ago we go in to a fight and I punched her window out and now she says she cant see me because I have a anger issue and a drinking problem. I have talked to her a few time and every time she starts crying and say she love me and misses me but she just cant be with me. The problem is that im in the marine and im deploying to afghanistan in a week should I go see her unannounced or so I just let her go she was and I still think she is the love of my life