Bullard of San Francisco, California developed the first hard hat, basing it on the Doughboy helmet he wore as a soldier in World War I. The helmet was made of ... of two feet did not break the cap, ...

At the outbreak of World War One ... killed before the end of the war was an American soldier called Henry Gunther. His family was German in origin. Caught up in one of the last battles, Gunther ...

The British Empire is also dragged into the conflict and the war in Europe starts to expand across the globe. The first shots of World War One are fired ... Britain and many American civilians ...

The hundreds of thousands of African Americans who served in the U.S. Army during World War I and returned home as heroes soon faced many more battles over their equality in American society ... On ...