I worked on the Civil War box for Adelbert Mell Lowell, [[Lowell-1468]] . I also added the ship categories for those ships already with categories. I listed all his ships on the regiment name= line. I got the ship categories from the link above.
Also, the Civil War box had UN navy. I would think that creates an error. The unit= line should be Union Navy (or it could have any one of the ship categories).