There can be no better illustration of the errors likely to occur when intelligence is conducted in an ad-hoc or desultory manner than the fact that the British forces who went to the Crimea did so without adequate mapping.
Major Thomas Best Jervis, a retired Indian Army Engineer Officer, having visited Sebastopol previously, happened to have a map of the Crimea when there were no others available to the Army.
Supported by the board of Ordinance, he produced an English version of the Crimea Map in ten sheets.
Jervis went on to lead the Topographical and Statistical Department of the War Office.
The map was printed in Chromolithography and was the first instance in which a map was produced in England with the sea delineated in blue, the hill work in brown and the remainder in black.
The maps were supported by topographical data and statistical information on the expected Russian forces.