Thanks for the chance to help. I am an attorney with over 12 years military law
Maryland is an "equitable distribution state"
That gives the court great latitude. They can give more or less than a community property state can give, based on the concept that the division should be "equitable"
But let me give you the formula that a community property state would use...that will give you a "ballpark" on what to expect.
What you describe is a division of marital property...the court will look at what percentage of the property was earned while the marriage was intact, as compared to what percentage of the property was earned outside the marriage.
Say there is a marriage of 20 years, and the pension is earned over the same 20 years (every day of work was a day of marriage). In such a case, I would expect an even 50/50 split.
Now...say that the marriage was 10 years of overlap in a 20 year career...in such a case, I would expect a 25% award (1/2 of 1/2)
What you describe? Lets make the math simple...say it is 28 year career and 14 years marriage? Then you get the same 1/2 of 1/2 or 25%.
Again, this is for community property.
Since MD is an equitable distribution, they can deviate from this slightly...but it is a good baseline