If a soldier who is stationed in one state but still has residency in his home state, where should he file for divorce?

He can probably file in either place, depending on how long he's been on station, but he's likely to save himself some grief if he files in the state where his wife is.

File where stationed as the other side is probably there also and it'd be easier for court hearings.

You can file the case in either state.

Generally, I would believe that the better than you would be in his home state.

It would be simpler if you and your spouse are in the same state. In that case, file there. If your spouse is in your home state, that may be easier. If you are both in different states, file where you are located.

I believe he can file in either County, and may want to look into the laws of community property and spousal support in each by contacting lawyers in each place. If it appears there may be significant court appearances (disagreements over custody, visitation, child support, spousal support, division of assets, division of debts), then he may want to consider which forum will be easier for him to attend court hearings. His wife may also move to have the case heard where she lives, if that is one of the places that he could have filed, so it may cause delay if he makes it inconvenient for her. There are many factors to consider and he should consult an attorney to discuss the exact situation.