| SUBMARINES | Vehicles first used in the Russo-Japanese war of 1904-05 (10) |
| ATWAR | Like Russia and Japan, for most of 1904-'05 |
| TANK | Armoured vehicle first used on the Somme in 1916 (4) |
| SINO | The ___-Japanese War of 1894-95 |
| TSUSHIMA | The ... Strait was the site of a major naval battle in May 1905 in the Russo-Japanese War (8) |
| KOREA | Country fought over in the Russo-Japanese War |
| ROOSEVELT | U.S. president who won the Prize in 1906 for mediating the end of the Russo-Japanese war (surname only) |
| POSTALCODE | A communications innovation first used in the UK in Norwich (1959) and Croydon (1967) |
| BLUECOLLAR | Term for trades workers or the jobs they perform, first used in the 1920s (4,6) |
| GEORGEREID | Prime minister of Australia from 1904-05 (6,4) |
| STONETOOLS | Implements first used in the Paleolithic age |
| HOVERCRAFT | Vehicle first designed by Christopher Cockerell (10) |
| UNICORN | National animal of Scotland, first used in the royal coat of arms by William I in the 12th century (7) |
| NOGOAREA | Military term for a region where the ruling authorities have lost control, first used in the Bush War in Rhodesia |
| GATLING | ___ gun, type of machine gun with a cluster of barrels first used in the U.S. Civil War (7) |
| SWELL | Germanic word first used in the sense of "rolling waves" by Shakespeare, later used an adjective describing someone stylishly dressed or as an expression of approval (5) |
| YELLOWJERSEY | This was first used in the Tour de France in 1919, sixteen years after the first tour |
| TORNADO | Former RAF combat aircraft that was first used in the Gulf War in 1991 (7) |
| SHIMONOSEKI | Japanese seaport at which the treaty ending the Sino-Japanese War was signed in 1895 |
| POTEMKIN | Military leader of the Russo-Turkish War (1768-1774) |
