Spouse is being bullied, I’m scared…

As the title says, my spouse is being HEAVILY bullied. I understand that the military is an extension of high school and there’s bound to be jerks everywhere however, I feel like it’s going too far.

I know he’s had a hard time in the past but recently, I found pictures in his phone where people were writing “(Last name) sucks” with phallic drawings, “(Last name) is fat and worthless, and Last name) with his name crossed out on a communal fridge, bathroom stalls, and even his rack. He seems so happy at home and I’m terrified that means he’s going to do something. It’s always the happiest people that I worry about. He’s also mentioned wanting to go to the gun range lately which makes me feel worse.

He’s mentioned being lonely and suicidal while on deployment in the past, that’s mainly where my anxiety comes from. He’s also been to the DRC before and it was suggested he go to a therapist but it fell through for some reason (I believe he said he didn’t want to get kicked out for mental health) but he doesn’t want to discuss it with me.

I just don’t know if there’s anything I can do for him. He’s my everything, I would never be able to forgive myself if he did something and I didn’t step in knowing this is happening. Is there anything a spouse could do? I feel so anxious and helpless, any and all advice would be appreciated.