J.R.R. Tolkien, C.S. Lewis, and Adolf Hitler were all soldiers who fought
in WWI's Battle of the Somme.

The Battle of Somme, also known as the Somme Offensive, is one of the most
infamous battles in history. The battle took place between July 1 through
November 1 in 1918 during World War I. The Battle of Somme was one of the
bloodiest battles throughout history, tallying 57,000 British casualties in
just the first day. The final tally? More than 1.5 million deaths.