A British artillery field gun from World War One. British munitions factories produced over 170 million artillery shells during WW1. 'Over the top': WW1 trench raids ...

Reconnaissance and fighter planes were heard in the skies above, artillery now accurately bolstered infantry advances, and for us, the British, tanks were being introduced to the battlefield.

The Smith Gun was designed by etired British Army Maj. William H. Smith in 1940. At the time, Smith was the managing director of a civil engineering firm that made toys.