Charles Keck was a very successful sculptor who had a fruitful relationship with the architect Henry Hornbostel. He decorated the City-County Building, Pennsylvania Hall at Pitt, the Education Building in Albany, and the City Hall in that other Oakland, the one in California, all of them buildings by Hornbostel. He was a natural choice for this allegorical sculpture over the entrance to Soldiers and Sailors Hall, whose message seems to be that America is always ready, so don’t mess with her.
Note the large eyes. They may be inspired by late-antique sculpture, in which the eyes are usually disproportionately big. In a sculpture meant to be seen from a distance, the disproportion is not obvious at normal viewing range, but the large eyes give expression to the face that it would not have if they were natural size.