99th Illinois Infantry Regiment

99th Regiment Illinois Volunteer Infantry
Former Illinoisan state flag
ActiveAugust 23, 1862 (1862-08-23) – August 9, 1865 (1865-08-09)
CountryUnited States
Allegiance
BranchUnion Army
TypeInfantry
SizeRegiment
Engagements

The 99th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.