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.