Images

March to Valley Forge, a depiction of General George Washington leading the Continental Army to Valley Forge in December 1777. Oil on canvas by William Brooke Thomas Trego, 1883. Museum of the American Revolution, Philadelphia, Pennsylvania...

Fort Mifflin, which, alongside Fort Mercer, defended the Delaware River during the American Revolutionary War (1775-1783). Painting by Seth Eastman, 1870. U.S. Army Center of Military History.

Battle of Monmouth Court House (28 June 1778), engraving by Robert Hinshelwood, based on an original artwork of Alonzo Chappel, c. 19th century. New York Public Library.

General Charles Lee, American Revolutionary War general. Illustration from page 92 of Geschichte der kriege in und ausser Europa by Christoph Heinrich, Korn. Nürnberg : G.N. Raspe, 1776-84. Library of Congress, Prints and Photographs...

Sir Henry Clinton, commander-in-chief of the British army from 1778-1782 during the American Revolutionary War. Portrait by Andrea Soldi, c. 1765, American Museum & Gardens, Bath, UK.

A shower of target indicators (TIs) dropped during the RAF bombing raids of the German city of Hamburg in July-August 1943. The raid caused a firestorm which killed over 44,000 civilians. (Imperial War Museums Collection)

A 1943 photograph of Albert Speer (1905-81), German Minister of Armaments during the Second World War (1939-45). He is shown here inspecting the Atlantic defences. (German Federal Archives)

A 1943 photograph of a Messerschmitt Bf 109 (ME-109) factory. It was the principal German fighter plane of the Second World War (1939-45). (German Federal Archives)

A 1940 photograph of a Messerschmitt Bf 109 (Me 109), the principal German fighter plane of the Second World War (1939-45). (Imperial War Museums Collection)

The cockpit of a Messerschmitt Bf 109 (Me 109), the principal German fighter plane of the Second World War (1939-45). (National Museum of the United States Air Force)