When my mother was going through that long, difficult phase (she's more confused, weaker, and less angry now) I was fortunate. She's strong, but I'm stronger. She's tough, but I'm stubborn. She can punch or scratch hard, but I can duck... well, except when I wasn't fast enough.
Much of the time I would tolerate the anger, go for long walks with her when she needed to escape, allow her to break things (within reason) and -- when things were really bad -- I'd sneak lorazepam into her food and we'd both have a break for a few hours. And when all that failed, I'd wrap her in my arms and hold her firmly until she'd beaten out all her anger and energy on my back... it seemed the safest thing to do sometimes even though I worried it might scare her and made things worse. But it did actually seem to help... she needed an outlet for her frustrations, disorientation, and fear, so I kind of put myself in harm's way, in a controlled fashion.
But obviously that's not an option for everyone, and especially not when it's a woman looking after a man who's likely to be more daunting, physically, and fuelled by fear and testosterone. So you have to make sure you're safe. That means medication to calm your husband (administered by external carers if he won't accept it reliably from you) or a care home.
In the mean time, try to remember that whatever the circumstances, no matter how crazy, your husband is always right. Agree with him, placate him in any way practical or safe, do not challenge or correct or try to get him to do something he doesn't want. You need him calm first, and only then can you hope to steer things in a way they need to go.
I took forever to learn this, and even now -- when I really ought to know better -- it's still hard to stick to. But you can't steer the dementia, you can only lead a trail of breadcrumbs which might distract it in the direction it needs to go. And if you can distract the dementia, you'll get more of your husband back for longer at a time.
Which sounds rather more optimistic and positive than I've often felt myself. There's no league table when it comes to dementia, and I'm hesitant to say any one form is worse than any other, but FTD is certainly first among equals when it comes to beating your head against a brick wall! Dealing with it is the hardest thing I've ever attempted to do, and perhaps the stupidest.
Keep safe and get help. Best of luck.