According to the site: "The majority of the company muster rolls in this series are from military organisations created by the State of Georgia during the Civil War for service within the State."
Entering a search term in the search box will result in a hit list with accompanying thumb nails of the original documents. An advanced search option is available also.
Be sure to read the information about the collection as you scroll down the landing page.
Confederate Muster Rolls:
'via Blog this'