Images

A 1917 photograph of the German commander Erwin Rommel (1891-1944) during the First World War (1914-18) when he led a specialist mountain unit.

A photograph of the German commander Erwin Rommel (1891-1944) taken in 1940 when he led the 7th Panzer Division during the Fall of France. (Imperial War Museums)

Henry David Thoreau (1817-1862), stipple and line steel engraving on paper by an unknown artist after Samuel Worcester Rowse, c. 1863 National Portrait Gallery, Smithsonian Institution.

Henry David Thoreau (1817-1862), photograph by Benjamin Dexter Maxham, 1856. National Portrait Gallery, Smithsonian Institution.

Title page from the first edition of Walden by Henry David Thoreau, Ticknor and Fields, 1854.

Plaque commemorating Thoreau's night in jail. Concord, Massachusetts, USA.

North American red fox photographed in the Rocky Mountains, Colorado, USA by Lvaughn7 in 2015.

The First Crusade (1096–1099) was a pivotal military expedition initiated by Western European Christians in response to Pope Urban II’s call at the Council of Clermont in 1095. Aimed at reclaiming Jerusalem and other holy sites in the Levant...

North American bald eagle. Photograph taken in Kachemak Bay, Alaska by Andy Morffew, 2016.

This infographic illustrates the Varna caste system in ancient India. First mentioned in the Rig Veda's Purusha Sukta c. 1200–1000 BCE, it shows society divided into four groups that emerged from the sacrifice of Purusha, a transcendent and...