Could you tell me what units were formed in 1861 that the gentleman is referring to?

"The 72nd Regiment of the Russell County Militia was organized in March of 1862 at Lebanon and immediately mustered into service of the Confederate States of
America. This was quite different from those organized in 1861. There were no spirited parades nor enthusiastic good-bye parties. The recruiters were not in search of adventure or glory. Virginia troops were sickly - having gone through sieges of mumps, measles and smallpox."

Diary of Russell County Citzen during Civil War