BILLY MACLEOD MBE
AUTHOR - ROYAL ENGINEERS
On bridges built and broken, charges packed by hand, and the practical genius that most accounts of the war leave out.
Picture a soldier and you picture a rifle. Fair enough. Every Sapper carried one, and in 1940 plenty of them used those rifles in earnest. But the rifle was never the thing that made a man a Royal Engineer. The thing that made him a Sapper was what he could do with his hands and his head when a problem stood in front of the whole army and somebody had to solve it.
The foreword to A Sapper’s Story – 1940 – Retreat to Dunkirk, written by the former Chief Royal Engineer, sets out the range of it plainly. Roads cleared. Bridges built or destroyed. Routes opened. Obstacles overcome. Mines dealt with. Water found. Positions prepared. And, when it came to it, rifles lifted and bayonets fixed. One trade, asked to do almost anything, usually under fire and usually without ceremony. That breadth is the craft. This post is about the skill underneath it, because it is the part the popular story of the war almost always leaves on the cutting room floor.
Good field engineering starts before anyone touches a tool. It starts with a man looking at a job and seeing what is actually wrong.
There is a moment in the novel that catches this exactly. A section is sent to help dig in machine gun positions beside a river. The infantry are working hard, sinking pits into the turf, and the pits are filling with water faster than they can bail them. The Sapper corporal takes one look and tells them they are wasting their time digging down, because the ground is wrong. Instead he points at a farmhouse and has the men strip its dry stone wall, form a chain, pass the stone down, and build the position up rather than into the ground. Sleepers go across the top, sandbags over them, stone packed in to make it blend. Inside the hour there is a solid, low, well-sited gun position where digging would have given them a flooded ditch.
Nobody fired a shot to make that happen. It was knowledge, applied fast. That is the daily reality of the trade far more than any heroic stand, and it is what readers who have done skilled work for a living tend to recognise first.
Then there is demolition, which outsiders imagine as the fun part and which is in truth the most exacting work a Sapper does.
Blowing a bridge is not about noise. It is about precision and control, about putting exactly enough explosive in exactly the right place so the span drops where you want it and the enemy cannot use it. The novel takes you right inside that work. Guncotton slabs wedged tight against the main support stone. Wooden blocks jammed in behind them to focus the blast inward rather than waste it on the air. Binding wire wound tight with a windlass stick and notched off. Detonating cord run the length of the bridge on both sides, looping through the charge chambers, the two lines carefully connected so the whole thing fires as one. Electric cable rolled back along a ditch to a firing point, then the detonator and the exploder, and a man waiting with his hand near it for the order.
When it comes, it is quick and total. In the book a bridge goes up in a single heavy crack that punches through the buildings, the span lifting, twisting, and dropping into the canal in sections, ironwork folding in on itself. Seconds of violence on top of hours of careful, patient preparation. And the men who laid those charges are, by definition, the last ones standing on the crossing while everyone else has already pulled back to safety.
That is what the book one tagline means. First in, last out. The Sappers go forward first to prepare the ground, build the crossings and ready the positions. Then, when the army falls back, they are the last to leave, because somebody has to bring the bridge down behind the final man across. It is a lonely place to be, and it takes a particular kind of nerve to do good, methodical work when the road behind you is emptying and the enemy is closing on the road ahead.
The craft is also intimate in a way film rarely shows. It is done up close, in bad light, in filthy conditions, with the danger pressing right against you.
One scene sends Donnie under a bridge to mark where the cutting charges will go if the span has to be dropped. He climbs over the railing, works down below the deck and crawls into a gap so tight he has to turn his head sideways to fit, chest pressed to the steel, dragging himself forward on his elbows in the dark to chalk every girder in turn. Above him, the bridge begins to shudder. Lorries and guns are rolling across the deck, the whole division moving over his head while he works in the rust and the river damp below. “Nobody said the job was glamorous,” his corporal tells him, and that line does a lot of honest work. The skill is real, the courage is real, and almost none of it looks like the war you see on a poster.
If you want the single image that sums up the Sapper mind, it is waiting on the beaches at Dunkirk.
The ships could not get close enough to the shallow sand to take men off. So the Engineers solved it with what they had, which was a beach full of abandoned lorries. They drove the vehicles out into the surf at low tide, lined them up, decked them over with planking, and made piers a man could walk out along to reach the small boats. Improvised jetties built from the army’s own wreckage, raised and repaired under shellfire. It is field engineering at its purest. Look at the problem, look at what is to hand, build the answer.
The tools and the ground change across the six books. In the desert it becomes minefields, anti-tank ditches and water discipline. At El Alamein the Sappers crawl forward ahead of the armour in the dark to cut wire and lift mines and open lanes through the enemy belts. In Italy it is blown bridges and flooded rivers and roads that have to be made passable before anything can advance. The work moves. The mind behind it does not.
You do not read this novel for a manual. You read it because there is something deeply satisfying about watching skilled people do difficult, dangerous work well, and because Billy MacLeod MBE served as a Sapper himself and writes the trade from the inside. The craft is the story. The men are the heart of it.
A Sapper’s Story – 1940 – Retreat to Dunkirk is published on 1 October 2026. Pre-order before 31 July and your name will be printed in the Nominal Roll at the back of the book. You can pre-order, and follow the series as it builds towards launch, at billymacleodmbe.com/pre-order.
