Edgar Lee Masters - Knowlt Hoheimer lyrics

I WAS the first fruits of the battle of Missionary Ridge. When I felt the bullet enter my heart I wished I had staid at home and gone to jail For stealing the hogs of Curl Trenary, Instead of running away and joining the army. Rather a thousand times the county jail Than to lie under this marble figure with wings, And this granite pedestal Bearing the words, "Pro Patria." What do they mean, anyway?