H.G. Wells’ 1903 story “The Land Ironclads” imagined a bold new war machine — a massive armored vehicle, “something between a big blockhouse and a giant’s dish-cover,” that ground remorselessly across the battlefield and gunned down enemy infantry:

They crawled level along the ground with one foot high upon a hillock and another deep in a depression, and they could hold themselves erect and steady sideways upon even a steep hillside. The engineers directed the engines under the command of the captain, who had look-out points at small ports all round the upper edge of the adjustable skirt of twelve-inch iron-plating which protected the whole affair, and who could also raise or depress a conning-tower set about the port-holes through the centre of the iron top cover. The riflemen each occupied a small cabin of peculiar construction, and these cabins were slung along the sides of and before and behind the great main framework, in a manner suggestive of the slinging of the seats of an Irish jaunting-car.

Thirteen years later, the first British tanks appeared at the Somme.

See The War Ahead.