Today marks the 100th anniversary of the beginning of World War I. Take a look back at one of the bloodiest conflicts in human history.
Today marks the 100th anniversary of the beginning of World War I, when Austria-Hungary invaded Serbia following the assassination of Archduke Franz Ferdinand. The battle would last a bloody four years and cost more than 37 million civilian and military lives in one of the deadliest conflicts in human history.
Patrick Aventurier/Getty Images
Maddie Meyer/Getty Images
Sebastião Salgado via Wikimedia Commons
U.S. Marine Corps
CDC Public Health Image Library
Theo Wargo/Getty Images for Tony Awards Productions
iStock / DrGrounds
Kevin Winter/Getty Images
Sign up for Breaking News, Daily Headlines, Severe Weather Alerts & more!