Images

A modern depiction of the Lakota Sioux trickster figure Iktomi (also known as Unktomi).

The progression from a basic two-cell building to a more elaborate layout incorporating a divided chancel area, first one extra aisle, then two, plus side chapels. By stage 3 only a few elements (black outline) of the original structure remain...

Ground plan of the Salisbury Cathedral showing the development of the layout of churches during the medieval period. Despite the complex layout with multiple aisles, transepts (G, H, O, P) and end (R) and side-chapels (W, X, 3-5), it preserves...

An ENIGMA cypher machine, used by Nazi Germany during the Second World War to send coded communications. Unknown to the Germans, the Poles, French, and British deciphered the code. (Museum of Science and Technology, Milan)

Auxiliary Territorial Service (ATS) personnel operating a searchlight during the Second World War (1939-45). Searchlights, often with the aid of radar, could help identify enemy aircraft for anti-aircraft gunners to shoot.

A photograph showing barrage balloons over London. The balloons were tethered on wires and deterred low-flying aircraft which could become entangled in them. Balloons were used to protect cities and important sites during the Second World...

A photograph showing members of the British Royal Observer Corps and the equipment they used to measure the altitude and position of incoming enemy aircraft during the Second World War (1939-45). The observers were an important element of...

A number of Chain Home radar towers, used by Britain to detect enemy movements during the Second World War (1939-45), particularly as part of the Dowding System during the Battle of Britain of 1940. These towers were at Poling in Sussex...

Air Chief Marshall Hugh Dowding (1882-1970), Commander-in-Chief of RAF Fighter Command during the Battle of Britain of 1940.

Line of American soldiers at the Battle of Guilford Court House (15 March 1781). Artwork by H. Charles McBarron, from Soldiers of the American Revolution, c. 20th century.