"Get out of there, you stupid bugger!" Griff screamed, and rushed across to the Chev. De Carette saw him ranting at the shadow of Bede inside the netting, but then the biplane turned in again, wings wriggling as it straightened its aim. He heard the first few shots from the Lewis before it was blotted out. Brrrrrrap.

The Chev vanished in a blast of dust, and in the middle of it there was flame. Griff staggered out of the smoke, either wounded or dazed. De Carette got up – so did half a dozen others – but they were slapped down as the whole thing blew. Petrol, mines, grenades, maybe even the plastic explosive, all at once. Blazing fuel cans arced into the bushes on every side and started new fires, and when the first eruption died down, the Chev was a tangle of junk, burning steadily and pouring black smoke into the air. Somebody ran across to Griff, took one look and ran back. There was no sign of Bede at all.

The biplane climbed away rather slower than before, and went into a wide, wary turn. So perhaps Bede, or even one of the Tommy-guns, had got lucky after all. Or maybe it was just out of ammunition, because after one circle, it flew away to the north.

"Get all the camouflage off," de Carette ordered. "Get everything ready to move." They hardly needed telling. The CR 42 knew it had left an unfinished job, and the smoke was rolling two hundred feet into the air before it thinned out. An aeroplane could probably see that from forty miles away. Ammunition began to cook off in the fire, spitting in all directions.

They were ready to move in under five minutes. The wireless Chev had several holes through its wooden bodywork, and there was a strong smell of petrol from a punctured can, but worst of all was a patch of damp on the ground between the front wheels.

"The bugger got her in the waterworks," the driver said. He crawled under and started feeling up around the radiator. "Shit."

"How far can you go?" de Carette asked.

"Dunno, sir… could be a mile or two…"

"Put in some water now, quickly." They moved like a circus acrobatic team. One yanked open the bonnet, another tossed down the can of water, the driver had the radiator cap off, a fourth started pouring. The bonnet clanged shut again.

"Go," de Carette said. "Spread out, go for the track. The Skipper will be coming back, one of us will see him." He slipped easily into command now there were decisions to be made. He must remember that he, unlike them, was a properly trained professional soldier. It was pure chance that they knew more about war than he did.

They picked up Tyler and his co-watcher after only a few minutes, staggering breathlessly back through the hummocks towards the smoke. De Carette gave him a quick report, and Tyler dropped panting into the gunner's seat of his jeep.

"Onto the track, then we'll head south." They charged off again. The first thing was to put distance between themselves and that black signpost in the sky.

They had to stop once, to put another can of water into the Chev; they didn't like using it up that way, but they had plenty for the moment-And in any case, de Carette knew the mission was dead. The loss of a truck and two men wasn't itself so bad: any military unit has to be able to take casualties without falling apart, and the lost supplies and fuel would have been used up by the dead men and wrecked truck anyway. But a single bullet through the wireless Chev's radiator was far worse. If they had to abandon that truck and fit eight men into two jeeps already jammed with gear, they'd have to dump not only the Chev's supplies but some from the jeeps as well.

It seemed very bourgeois thinking, and de Carette reminded himself of his mother in her high-necked black bombazine, old before her time because her chosen age was old, ticking off on her fingers the tiny triumphs of a morning's shopping in Cannes market.

But he hadn't starved at home and he didn't want to starve in the desert. No, the mission was dead. Tyler would know that.

They reached the track and turned south, away – they hoped – from trouble. For about ten miles they ran at speeds of thirty and forty mph, until the Chev's driver waved them down. The radiator was steaming like a kettle.

"Another ten seconds and she'd sieze solid, Skipper."

Tyler looked carefully around. There was a narrow strip of the bushy hummocks on the west side of the track before the real sand began. "Get off the road and dig her in."

They all bumped cautiously into a dead-end wadi, ran for a hundred and fifty yards, then stuck. Everybody except the gunners leapt out and started smothering the truck in netting and bushes. The gunners watched and automatically lit cigarettes. None of the vehicles had windscreens, so it was near impossible to smoke on the move.

Tyler scribbled a quick message on a signals pad and showed it to de Carette. It gave their position, then: No clue French. Lost two men and one Chev air attack. Other Chev probably immobile. Task unlikely completion. Details follow. Tyler.

De Carette nodded. "Does one need more detail?"

Tyler made a grunting chuckling noise and gave the signal to the Sergeant. "Encipher that and get it off as soon as you can, never mind about proper call times. We'll be back by dark."

One of the gunners called: "Planes, Skipper! Up north." He used a deliberately husky voice, as if aeroplanes five miles away might overhear, but de Carette now knew how he felt.

"Start up!" Tyler shouted. They drove out of the wadi and on southwards at a sober speed to keep down the dust.

"They're comin' this way, sir." his gunner said. They called him Yorkie, a solid squat boy from a Yeomanry regiment.

"What are they?"

"Stukas I reckon. Bugger 'em. There in't no hurry, sir."

De Carette had instinctively accelerated, but speed was no use against an aeroplane until it was actually attacking you.

"They 'ave us." Yorkie said. De Carette let the jeep coast, looking back over his shoulder. The two crank-winged Junkers 87's were following straight down the line of the track and as he watched, their engines began to strain, reaching for more height.

He drove on slowly, glancing upwards. The first Stuka nosed carefully over, with the precision of a marksman bringing a target rifle into his shoulder. Yorkie muttered filthy words. The Stuka dived almost vertically but not very fast, a crippled black shape against the pale sky.

"This in't our 'un," Yorkie said. "We'll get 'is mate." He swung up the K guns and fingered the triggers. "Could you keep 'er still a moment, sir?"

De Carette turned the jeep sideways and stopped. The Stuka was already right overhead, going for Tyler's jeep, a quarter of a mile down the track. Yorkie started firing as the Stuka let go two small bombs and began a sharp pull-out.

Tyler's jeep swerved wildly away off the track and two yellow-black spouts of smoke jumped up behind him. The jeep seemed unharmed. So did the Stuka.

'"Ere comes our 'un," Yorkie said, and went on swearing calmly as he changed the pans on the K guns. But he wouldn't be able to elevate them enough to shoot at a a dive-bomber coming from right above.

"It seems so," de Carette said, surprised at how cool he sounded. He was terrified. He had been in a few night-time air raids in Egypt, and under artillery fire three times. But those had been impersonal, random affairs. Now a man in an aeroplane had chosen to kill him. There had been a choice and that man had decided to kill him, de Carette, rather than somebody else. It was unbelievable. As it toppled into the dive, the second Stuka looked like a gun barrel with wings.

He hauled the jeep around and accelerated furiously north, back up the track and into the diving aeroplane, hoping to force it to steepen its dive even further. But he was going too fast to look up.

"Bombs away!" Yorkie called. De Carette wrenched the wheel, almost overturned the jeep, and crashed into the cover of two bushy dunes. An explosion and a blast of hot air slapped him in the back. He froze, trying to decide if he were hurt, and there came another, longer explosion.