Re: Photo of soldier, John H. Love now online
I took a look. I think I can at least narrow the ranking for you. The shoulder strap for a colonel is a picture of an eagle and is positioned in the middle of the strap. As the picture shows that the middle of the strap is empty we can eliminate Colonel. Now as for the other 2 ranks, Major and Lt. Colonel, a major's piping and insignia is a dull copper color and since this officers piping is as bright as his buttons, I'd hazard to say they're the same color. Now in those day's officer's buttons were gold colored and the only rank of the 2 listed above with gold is that of Lt colonel.I'm sure it's a safe bet to say that that is what your officer is.Here's a picture of a Lt. Colonel's strap in the Union army.
Good luck hope this helped.