The more I look at the first photo, the more I think it's a Marine uniform from somewhere around the 1860's. The badge on the shako on the table, what looks lie globes embroidered on the epaulettes, and the cuff embroidery.
I still can't see the insignia on the belt and patrol jacket in the secong figure clearly enought to make an accurate guess. Here's aanother website that does a very good job with photos like these,
http://www.victorianwars.com/index.php