Carl Sandburg (6 January 1878 – 22 July 1967 / Illinois)

In the old wars drum of hoofs and the beat of shod feet.
In the new wars hum of motors and the tread of rubber tires.
In the wars to come silent wheels and whirr of rods not
yet dreamed out in the heads of men.

In the old wars clutches of short swords and jabs into
faces with spears.
In the new wars long range guns and smashed walls, guns
running a spit of metal and men falling in tens and
twenties.
In the wars to come new silent deaths, new silent hurlers
not yet dreamed out in the heads of men.

In the old wars kings quarreling and thousands of men
following.
In the new wars kings quarreling and millions of men
following.
In the wars to come kings kicked under the dust and
millions of men following great causes not yet
dreamed out in the heads of men.