| ENGINEER | Originally a builder of fortifications, siege artillery and mechanical weapons such as trebuchets, later a designer/maker of machinery or structures such as bridges or roads (8) |
| SWORD | Weapon, such as Excalibur, consisting of a blade and a hilt |
| ARSENICAL | One caught amongst weapons such as a form of 9 |
| TELFORD | Nicknamed the Colossus of Roads by Robert Southey, a builder of canals, churches, roads, aqueducts and a number of bridges including one spanning the Menai Strait (7) |
| SCABBARD | Sheath for a bladed weapon such as a sword or bayonet, traditionally suspended from a shoulder belt called a baldric (8) |
| ENGINE | From the Latin meaning "talent, device", a word for cunning or genius; a weapon such as a ballista, battering ram or scorpion; or, a car's motor (6) |
| ATOMBOMBS | A mob's upset about grave weapons such as these (4,5) |
| ARTIFICER | A soldier of the Royal Electrical and Mechanical Engineers selected for special electro-mechanical training and rapid promotion to the rank of Staff Sergeant |
| FIREARM | A portable weapon such as a gun or pistol (7) |
| MINE | A weapon such as a Bouncing Betty or Blue Parrot (4-9,4) |
| ANTIPERSONNEL | A weapon such as a Bouncing Betty or Blue Parrot (4-9,4) |
| HOWITZER | Shorter artillery weapon such as the German Big Bertha of WWI (8) |
| SCABBARDS | Holders for bladed weapons such as swords or bayonets (9) |
| SWORDDANCE | Scottish traditional entertainment which in the past involved weapons such as the Lochaber axe (5,5) |
| SIDEARM | Weapon such as a pistol or a sword (7) |
| SIDEARMS | Weapons such as pistols (8) |
| GREATWALL | Series of fortifications in China, along part of which one of the world's most challenging marathons |
| MAGINOT | Line of fortifications on France's eastern border, named after a 1930s Minister of War (7) |
| CHARLESBABBAGE | English mathematician, philosopher, inventor and mechanical engineer considered a "father of the computer" |
| BRICKLAYER | Cyril Baker, renamed as a builder of walls (10) |
