I did a Goggle search “39th alabama infantry regiment diary” and came up with this hit.

https://www.google.ca/search?ei=FukuW6PtLoO6sQX54a-QBw&q=39th+alabama+infantry+regiment+diary&oq=39th+alabama+infantry+regiment+diary&gs_l=psy-ab.3...17201.19799.0.23796.6.6.0.0.0.0.199.907.0j6.6.0....0...1c.1.64.psy-ab..0.4.587...0i22i30k1j33i22i29i30k1j33i160k1.0.jaxnrYA50kY

Looks like with a lot of digging you might find a gem