Command, what would you make of this?’
‘I’d suspect an airborne and sea invasion of Yugoslavia. But I wouldn’t be sure.’
The German reaction exactly,’ Jensen said with some satisfaction. ‘They’re badly worried, worried to the extent that they have already transferred two divisions from Italy to Yugoslavia to meet the threat.’
‘But they’re not certain?’
‘Not quite. But almost.’ Jensen cleared his throat. ‘You see, our four captured mission leaders were all carrying unmistakable evidence pointing to an invasion of Central Yugoslavia in early May.’
‘They carried evidence –’ Mallory broke off, looked at Jensen for a long and speculative moment, then went on quietly: ‘And how
did
the Germans manage to capture them all?’
‘We told them they were coming.’
‘You did what!’
‘Volunteers all, volunteers all,’ Jensen said quickly. There were, apparently, some of the harsher realities of total war that even he didn’t care to dwell on too long. ‘And it will be your job, my boy, to turn near-conviction into absolute certainty.’ Seemingly oblivious of the fact that Mallory was regarding him with a marked lack of enthusiasm, he wheeled round dramatically and stabbed his cane at a large-scale map of Central Yugoslavia.
‘The valley of the Neretva,’ Jensen said. ‘The vital sector of the main north-south route through Yugoslavia. Whoever controls this valley controls Yugoslavia – and no one knows this better than the Germans. If the blow falls, they know it must fall here. They are fully aware that aninvasion of Yugoslavia is on the cards, they are terrified of a link-up between the Allies and the Russians advancing from the east and they
know
that any such link-up must be along this valley. They already have two armoured divisions along the Neretva, two divisions that, in the event of invasion, could be wiped out in a night. From the north – here – they are trying to force their way south to the Neretva with a whole army corps – but the only way is through the Zenica Cage here. And Vukalovic and his seven thousand men block the way.’
‘Vukalovic knows about this?’ Mallory asked. ‘About what you really have in mind, I mean?’
‘Yes. And the Partisan command. They know the risks, the odds against them. They accept them.’
‘Photographs?’ Mallory asked.
‘Here.’ Jensen pulled some photographs from a desk drawer, selected one and smoothed it out on the table. ‘This is the Zenica Cage. Well named: a perfect cage, a perfect trap. To the north and west, impassable mountains. To the east, the Neretva dam and the Neretva gorge. To the south, the Neretva river. To the north of the cage here, at the Zenica gap, the German 11th Army Corps is trying to break through. To the west here – they call it the West Gap – more units of the 11th trying to do the same. And to the south here, over the river and hidden in the trees, two armoured divisions under a General Zimmermann.’
‘And this?’ Mallory pointed to a thin black linespanning the river just north of the two armoured divisions.
‘That,’ Jensen said thoughtfully, ‘is the bridge at Neretva.’
Close-up, the bridge at Neretva looked vastly more impressive than it had done in the large-scale photograph: it was a massively cantilevered structure in solid steel, with a black asphalt roadway laid on top. Below the bridge rushed the swiftly-flowing Neretva, greenish-white in colour and swollen with melting snow. To the south there was a narrow strip of green meadowland bordering the river and, to the south of this again, a dark and towering pine forest began. In the safe concealment of the forest’s gloomy depths, General Zimmermann’s two armoured divisions crouched waiting.
Parked close to the edge of the wood was the divisional command radio truck, a bulky and very long vehicle so beautifully camouflaged as to be invisible at more than twenty paces.
General Zimmermann and his ADC, Captain