100 Years Ago, the United States Entered World War I

On April 6, 1917, the United States congress voted to formally enter World War I. More than two years of war had been waged in Europe, as the U.S. tried to remain neutral. In early 1917, German submarine attacks on all ships bound for England resumed, adding to the building pressure to join the war against the German Empire and the Central Powers, which led President Woodrow Wilson to ask Congress to declare war. I’ve covered World War I extensively before, in the 10-part series World War I in Photos. Today, a collection of relatively-unseen images from a century ago, focusing on American war involvement, some on the home front, some overseas, and some images of their allies and enemies as well.

Read more
Hints: View this page full screen. Skip to the next and previous photo by typing j/k or ←/→.

Most Recent

  • Adam Pretty / Getty

    Scenes From the 2017 World Aquatics Championships

    Hundreds of athletes from 186 nations are gathered in Budapest, Hungary to compete in 75 events across six disciplines in the 17th FINA World Championships.

  • Jorge Silva / Reuters

    A Walk in the Woods: A Photo Appreciation of Trees

    A collection of images of unusual, intriguing, and beautiful trees and forests around the world.

  • Stevo Vasiljevic / Reuters

    Wildfires Across Southern Europe

    Recent high temperatures and dry, windy conditions in Italy, Croatia, Montenegro, France, and Portugal have resulted in thousands of small wildfires and a few large large blazes.

  • Cate Gillon / Getty

    Swan Upping on the River Thames

    The annual Swan Upping began today in London, England—a five-day census counting swans and young cygnets belonging to the Queen.

Join the Discussion