Lieutenant-Colonel Jean-Marie Bastien-Thiry waited in a cafe in the suburb of Meudon. He was thirty-five, married with three children and he worked in the Air Ministry. Behind the conventional facade of his professional and family life he nurtured a deep bitterness towards Charles de Gaulle, who, he believed, had betrayed France and the men who in 1958 had called him back to power, by yielding Algeria to the Algerian nationalists.

He had lost nothing through the loss of Algeria, and it was not personal consideration that motivated him. In his own eyes he was a patriot, a man convinced that he would be serving his beloved country by slaying the man he thought had betrayed her. Many thousands shared his views at that time, but few in comparison were fanatical members of the Secret Army Organisation which had sworn to kill De Gaulle and bring down his government. Bastien-Thiry was such a man.

He was sipping a beer when the call came through. The barman passed him the phone, then went to adjust the television set at the other end of the bar. Bastien-Thiry listened for a few seconds, muttered «Very good, thank you' into the mouthpiece and set it down. His beer was already paid for. He strolled out of the bar on to the pavement, took a rolled newspaper from under his arm and carefully unfolded it twice.

Across the street a young woman let drop the lace curtain of her first-floor flat, and turning to the twelve men who lounged about the room, she said, «It's route number two.»

The five youngsters, amateurs at the business of killing, stopped twisting their hands and jumped up.

The other seven were older and less nervous. Senior among them in the assassination attempt and second-in-command to Bastien-Thiry was Lieutenant Alain Bougrenet de la Tocnaye, an extreme right-winger from a family of landed gentry. He was thirty-five, married with two children.

The most dangerous man in the room was Georges Watin, aged thirty-nine, a bulky-shouldered, square-fowled OAS fanatic, originally an agricultural engineer from Algeria, who in two years had emerged again as one of the OAS's most dangerous trigger-men. From an old leg-wound he was known as the Limp.

When the girl announced the news the twelve men trooped downstairs via the back of the building to a side street where six vehicles, all stolen or hired, had been parked. The time was 7.55.

Bastien-Thiry had personally spent days preparing the site of the assassination, measuring angles of fire, speed and distance of the moving vehicles, and the degree of firepower necessary to stop them. The place he had chosen was a long straight road called the Avenue de la Liberation, leading up to the main cross-roads of Petit-Clamart. The plan was for the first group containing the marksmen with their rifles to open fire on the President's car some two hundred yards before the cross-roads. They would shelter behind an Estafette van parked by the roadside, beginning their fire at a very shallow angle to the oncoming vehicles to give the marksmen the minimum of lay-off.

By Bastien-Thiry's calculations a hundred and fifty bullets should pass through the leading car by the time it came abreast of the van. With the presidential car brought to a stop, the second OAS group would sweep out of a side road to blast the security police vehicle at close range. Both groups would spend a few seconds finishing off the presidential party, then sprint for the three getaway vehicles in another side street.

Bastien-Thiry himself, the thirteenth of the party, would be the lookout man. By 8.05 the groups were in position. A hundred yards on the Paris side of the ambush Bastien-Thiry stood idly by a bus stop with his newspaper. Waving the newspaper would give the signal to Serge Bernier, leader of the first commando, who would be standing by the Estafette. He would pass the order to the gunmen spread-eagled in the grass at his feet. Bougrenet de la Tocnaye would drive the car to intercept the security police, with Watin the Limp beside him clutching a submachine gun.

As the safety catches flicked off beside the road at Petit-Clamart, General de Gaulle's convoy cleared the heavier traffic of central Paris and reached the more open avenues of the suburbs. Here the speed increased to nearly sixty miles per hour.

As the road opened out, Francis Marroux flicked a glance at his watch, sensed the testy impatience of the old General behind him and pushed the speed up even higher. The two motor-cycle outriders dropped back to take up station at the rear of the convoy. De Gaulle never liked such ostentation sitting out in front and dispensed with them whenever he could. In this manner the convoy entered the Avenue de la Division Leclerc at Petit Clamart. It was 8.17 pro.

A mile up the road Bastien-Thiry was experiencing the effects of his big mistake. He would not learn of it until told by the police as he sat months later in Death Row. Investigating the timetable of his assassination he had consulted a calendar to discover that dusk fell on August 22nd at 8.35, seemingly plenty late enough even if De Gaulle was late on his usual schedule, as indeed he was. But the calendar the Air Force colonel had consulted related to 1961. On August 22nd, 1962, dusk fell at 8.10. Those twenty-five minutes were to change the history of France. At 8.18 Bastien-Thiry discerned the convoy hurtling down the Avenue de la Liberation towards him at seventy miles per hour. Frantically he waved his newspaper.

Across the road and a hundred yards down, Bernier peered angrily through the gloom at the dim figure by the bus-stop. «Has the Colonel waved his paper yet?»

he asked of no one in particular. The words were hardly out of his mouth when he saw the shark nose of the President's car flash past the bus-stop and into vision. «Fire!» he screamed to the men at his feet. They opened up as the convoy came abreast of them, firing with a ninety-degree layoff at a moving target passing them at seventy miles per hour.

That the car took twelve bullets at all was a tribute to the killers' marksmanship. Most of those hit the Citroen from behind. Two tyres shredded under the fire, and although they were self-sealing tubes the sudden loss of pressure caused the speeding car to lurch and go into a front-wheel skid. That was when Francis Marroux saved De Gaulle's life.

While the ace marksman, ex-legionnaire Varga cut up the tyres, the remainder emptied their magazines at the disappearing rear window. Several slugs passed through the bodywork and one shattered the rear window, passing within a few inches of the presidential nose. In the front seat Colonel de Boissieu turned and roared «Get down' at his parents-in-law. Madame de Gaulle lowered her head towards her husband's lap.

The General gave vent to a frosty «What, again?» and turned to look out of the back window.

Marroux held the shuddering steering wheel and gently turned into the skid, easing down the accelerator as he did so. After a momentary loss of power the Citroen surged forward again towards the intersection with the Avenue du Bois, the side road where the second commando of OAS men waited. Behind Marroux the security car clung to his tail, untouched by any bullets at all.

For Bougrenet de la Tocnaye, waiting with engine running in the Avenue du Bois, the speed of the approaching cars gave him a clear choice: to intercept and commit suicide as the hurtling metal cut him to pieces or let the clutch in a half-second too late. He chose the latter. As he swung his car out of the side road and into line with the presidential convoy, it was not De Gaulle's car he came alongside, but that of the marksman bodyguard d'Jouder and Commissaire Ducret.

Leaning from the right-hand side window, outside the car from the waist up, Watin emptied his submachine gun at the back of the DS in front, in which he could see De Gaulle's haughty profile through the smashed glass.