| CAMBRAI | First World War battle on the Western Front in 1917 which saw the first effective large-scale use of tanks (7) |
| ANTIETAM | First major Civil War battle on Union soil |
| SOMME | 1916 141-day battle on the Western Front (5) |
| SALK | Jonas , virologist who developed the first effective polio vaccine (4) |
| BULLRUN | Name of two American Civil War battles on July 21, 1861 and August 10-12, 1862 (4,3) |
| AMINOR | Its scale uses no black keys |
| LITTLEBIGHORN | 1876 battle which saw the defeat and killing of General Custer (6,7) |
| PLIOCENE | Geological era which saw the joining of the Americas (8) |
| SALKVACCINE | First effective medication against polio, named after its inventor (4,7) |
| FOCH | Ferdinand, marshal of France who was commander in chief of Allied armies on the Western front in the First World War (4) |
| LOOS | First World War battle saw the first use of poison gas by the Allies (4) |
| PARTRIDGE | Grey -; gathering on the ground in a covey, a farmland game bird that thrived on the Western Front in no-man's-land during the First World War (9) |
| SEDAN | Town on the River Meuse which was the scene of a 1940 Second World War battle which began the German invasion of France (5) |
| CRECY | Battle that saw the first major English victory on land during the Hundred Years' War (5) |
| YPRES | First World War battle from which the Race to the Sea developed (5) |
| SCARPE | Three First World War battles were named after this river of the Arras area of northern France (6) |
| TOBRUK | Small port in north east Libya which saw severe fighting in the Second World War (6) |
| ESCOBAR | Notorious Colombian drug lord who died in a gun battle on the roof tops of Medellin in 1993, Pablo . |
| INDIAN | Nationality of the actress who won Celebrity Big Brother in 2007, which saw Jade Goody return to the house (6) |
| BOWER | Shelter at the Western front in an old war |
