Unknown Soldier

It's unknown to me, because I don't have any info on this. I see there is a plaque right there at his feet, but I never took a look at it to see what it said. The statue is located on the State Capital grounds. I know there was a military type building right next to where this is. I know, it's not much info, but I though the 12 to 15 foot tall statue was interesting with the backdrop.