Statistics for occurrence #1 of “Rudd” in chapter 8 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

... Rudd
O. E. Hunt, Captain, United States Army The provision of muskets and cannon for the vast army of volunteers...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Rudd 25 2 5 0 0 user votes
Hezekiah Rudd 10 0 0 0 0 user votes
James B. Rudd 6 0 0 0 0 user votes
John W. Rudd 4 0 0 0 0 user votes
E. W. Rudd 2 0 0 0 0 user votes
Hezekdah Rudd 2 0 0 0 0 user votes
J. E. Rudd 2 0 0 0 0 user votes
M. V. Rudd 2 0 0 0 0 user votes
S. Rudd 2 0 0 0 0 user votes
Samuel Rudd 2 0 0 0 0 user votes
Thomas Rudd 2 0 0 0 0 user votes
W. D. Rudd 2 0 0 0 0 user votes
William Rudd 2 0 0 0 0 user votes
William J. Rudd 2 0 0 0 0 user votes
Wesley Rudd 1 0 1 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.