Yes, take it to your attorney who will be the one to best guide you on how to get an equitable distribution of the marital property.
Now I know nothing about Michigan law, but I can speak generally. All part of compensation including pensions are considered "marital" property. This means it should be divided equitably between the two of you.
21 years of marriage is clearly a point where spousal maintenance could be paid. But on this especially, you need to speak to your attorney. Good luck.
