Aggressive husband with Baby!

So, our DD, is three months and when she was first born, my soon to be ex-husband droped her an inch off the play pin because she was crying and he was frustrated. He also pulled her leg and it was sore for a couple day's. Well, this is one of the reasons we are getting divorced. He wants Partial custody and told him only if he could take care of baby girl without getting upset and yelling and abusing her. Well, naturally like men do, he lied to get what he wants. Well, I'm active duty Army, and today I have 24hour duty. During my dinner, which my mother brought, along with my daughter...she told me he's been yelling and mistreating her again...so, I'm going to get proof and only give him supervised visitations...I mean seriously? She's a baby, how can he get mad like that and take it out on her? I come in dog tired and dont get that way....so really?