J.A.
Bless your heart ~ 6 children is quite a handful even with the full cooperation of your husband. But if you fight a lot, that would be very difficult to keep it together.
If the encounters end up abusive in any manner ~ verbal, emotional, physical, sexual ~ that is all too common, but not "acceptable" for you, your husband and certainly not for the children as they watch it all. They feel helpless, even guilty ~ and tend to pick it up as "normal" and repeat it in their future marriages. Can you and your husband agree to "rules" in your fights? When one gets to the point of saying something they shouldn't, then use pre-agreed-upon "alert" words to stop the fight and then pick up the issues to discuss when both are cooled down. You just need to be diligent in following through so you make headway in your communication and work through the underlying problems for the fights. Solutions need to be reached, otherwise the anger will only escalate. Sort of like going to the hospital for surgery and half way through the operation getting off the operating table and going home. The original problem still exists and now you have an open wound not properly dealt with. The consequences can be severe if not life threatening. You need to deal with the deep stuff (which is hard) and then the healing will come.
Here's a great link for wonderful books on communication in marriage: http://www.garychapman.org/products.htm. Best wishes. I'll be praying for you, M. M!