CSA Flags, on page 108
Here is the link,
http://books.google.com/books?id=0UdHAQAAIAAJ&pg=RA4-PA105&dq=Confederate+War+Department+Union+flags+captured&hl=en&ei=nGuyToGkGeSU2AXSwdykBA&sa=X&oi=book_result&ct=result&resnum=6&sqi=2&ved=0CF0Q6AEwBQ#v=onepage&q=Confederate%20War%20Department%20Union%20flags%20captured&f=false
Hope that helps!
Shawn Prouty