What the industry learned from the First World War
But far from the mud of the trenches, advances in science and industry have helped decide the outcome of the conflict.
Some businesses have flourished, while others have seen a need for regeneration.
But in the midst of the frenzy of inventions and reinventions, as bodies piled up, some people were making money.
The top news line, tanks and airplanes, sometimes makes us forget some of the breakthroughs we use most today.