I tend to work on one nationality for a while and then go to another, some times when I get bored or sometimes when I hear from a new cousin that gives me a chance to look at something different.
I spent many months tracing Italians, but this summer, my German -American cousins came for a visit and wanted information. They also had some to share. So I have been chased down a variety of my German lines this summer. But which family I work on can change from week to week, a few days on one family and next you know I am researching their inlaws! I usually try not to get too far afield and after a week or two go back to someone I am actually related too rather than the inlaws of some cousin by marriage <g>.
This week I have been focusing on Germanic relatives and their in laws who were involved in the US Civil War. My other nationalities were in Europe during the 1860s, so only my Germans were in the USA during the US Civil War. The Germans all seem to be Union Army. When I feel like looking at my sons-in-laws lines, I will find some Confederates! It will be good to have them all properly entered here no matter what side they fought on. Like many families, we are related to both sides.