I. Muster Rolls (1861-1864)
These were the routine official records kept by the Union and Confederate armies during the Civil War. They are today stored in the National Archives, but are too fragile to be readily available to the public.
II. Compiled Military Service Records
The approximately 140 million cards include 5.4 million General Index Cards, each containing a soldier's name. It is important to understand that the first phase of the CWSS, known as the Names Index phase, is limited to less than ten pieces of information on each of the 5.4 million General Index Cards. The most important pieces of information are the name of the individual, rank in and out, and the name of the organizational unit (such as regiment and sometimes the company).
III. Microfilm Copies of General Index Cards
The National Archives produced microfilm records of the General Index Cards for public use at the Archives in Washington and in regional offices; copies were also made by the Genealogical Society in Utah.
IV. Paper Copies of Microfilm Records (c. 1992)
Paper copies of the microfilm ("blowback" records) were made by NPS and GSU for use by volunteers entering data for the CWSS.
V. Data Entry into UDE (Universal Data Entry) Software by FGS and UDC volunteers (1993-99)
As of the year 2000, volunteers in over 36 states had completed initial data entry for all of the 6.3 million soldier names. All of this work was done on home computers using the Mormon Church's universal data entry (UDE) software, from paper copies of the microfilm records.
VI. Editing by GSU, FGS, and The Utah Army Corps
The data from the FGS and UDC volunteers around the country was received by the GSU and was edited for accuracy, consistency, etc. Also, Unit Codes were derived from the original data. The Utah Army Corps provided invaluable support during this final editing process.
VII. Converting Data into the CWSS
NPS staff converted the data into an Oracle database for use in the CWSS on the Internet. Data was made available on the CWSS as it was completed by the GSU and FGS.
From the Civil War Soldiers and Sailors System