An explosion on the battlefield in France during World War 1 could be heard in London. Journalists faced execution for their reporting. 12 million letters were delivered to the front lines every week. The war effort caused some women's skin to turn yellow from their work. Plastic surgery was invented due to injuries from World War 1. The poet Wilfred Owen was unknown at the end of the war despite his talents. The youngest British soldier was only 12 years old. World War 1 nearly caused a financial meltdown in Britain. Blood banks were developed to help with injuries. Camouflage allowed war ships to hide in plain sight. 9 out of 10 soldiers survived serving in the trenches. Generals were banned from going over the top