It was consolidated and mustered into Federal service as the 19th Illinois Volunteer Infantry on June 17, 1861.

"[2] On May 4, 1861, the regiment from the State at large was mustered into service at Camp Yates.

It was eventually mustered into United States service for three years and on June 17, 1861, it became the 19th Illinois Volunteer Infantry Regiment.

[2] The nineteenth has been revered as "a solid and expert Zouave regiment" which, until the battle of Chickamauga was remembered for its charge at Stone's River.

The regiment suffered 4 officers and 60 enlisted men who were killed in action or who died of their wounds and 4 officers and 101 enlisted men who died of disease, for a total of 169 fatalities.