The Zoo Flak Tower
Target indicators falling over Berlin during a raid on the city
Berlin city strike photo
The 'Battles' of Bomber Command were not fought out between
two sets of formed adversaries as in conventional combat. It is true that the
Luftwaffe tried to engage the bombers and wear down their strength, but more
than nine out of every ten bombers usually reached the target area unscathed,
and it was here that the true battle was fought, between the tonnage of bombs
dropped and the target city itself. The true German 'side' in the Battle of
Berlin were the city's air-raid organization and civil administration, the
resilience of its public services and of its industrial and commercial firms
and, above all, the spirit and will-power of the civilian population.
Berlin as it stood awaiting the bombers in August 1943.
It was huge, being not only the capital and largest city in
Germany, but the third largest city in the world, with an area covering nearly
900 square miles and a pre-war population of more than four million of the
tough stock of local inhabitants. Now, in 1943, it was the administrative
centre not only of Germany but of the new empire that had been carved out of
Europe by conquest. Those massive government departments alone would have been
a sufficient attraction for the R. A. F. interest, but Berlin's war factories
and its rail and canal communications, standing halfway between the Western and
Eastern Fronts, made it both a major arsenal and the hub of Germany's interior
lines of communication. The 'big five' in war industry terms were the Alkett
factory at Spandau, which produced large numbers of self-propelled guns and
half of the Wehrmacht's field artillery; the Borsigwerke, making locomotives,
rolling stock and heavy artillery; the D. W. M. and D. I. W. combines, both
producing large quantities of small arms, mortars and ammunition; and Siemens,
the huge electrical firm not only located in its self-contained 'Siemensstadt',
a huge area packed with various factories, but with other plants all over
Berlin. A selection of some of the other well-known names of firms with
premises in Berlin confirms the obvious importance of the city to Germany's war
effort: at least ten A. E. G. factories, the Arguswerke where V-i engines were built,
a B. M. W. and two Daimler-Benz motor factories, two Henschel and one Dornier
aircraft factories, a Mauser weapons factory, three Rheinmetall and three
Telefunken factories, V. K. F. ball-bearings, Zeiss cameras. Most of this had
been hardly touched by the war so far. When Britain rearmed in the mid-1930s a
bomber force was planned with the range to reach Berlin. But the first attack
was delayed for nearly a year, initially by the general bombing restraint which
held until the German offensive in the West in May 1940, and then by the R. A.
F.'s preoccupation with the Battle of France and the home invasion threat. The
first raid was carried out by about fifty Wellingtons and Hampdens on the night
of 25/26 August 1940, in retaliation for a raid on London the previous night.
It was a disappointing raid. Strong head winds, thick cloud and the navigation
problems which were to hamper the bomber crews for much of the war resulted in
only a handful of aircraft reaching the Berlin area to drop a few bombs in the
countryside south of the city. But Bomber Command persisted for more than a
year. The records for that period do not make it clear exactly how many sorties
were dispatched to Berlin, but possibly a thousand aircraft attempted to bomb
the city between August 1940 and November 1941. At least sixty-two bombers were
lost in these operations. The climax came on the night of 7/8 November 1941,
when 169 aircraft were dispatched to Berlin, despite a poor weather forecast.
Twenty-one of these did not return. It was the culmination of a disappointing
period and the Commander-in-Chief of Bomber Command, Air Marshal Sir Richard
Peirse, departed.
When Sir Arthur Harris took over early in 1942, he ignored
Berlin for the whole of that year, preferring to build up the strength of his
force carefully and to experiment with new tactics against easier targets.
Then, in early 1943, came a series of five raids, with 1,415 four-engined
aircraft sorties being sent to Berlin. These raids produced moderate results;
various residential areas were damaged and about 650 Berliners were killed. By
no more than chance, all of these raids hit only the southern districts of
Berlin; the administrative centre and the industrial areas which were mainly in
the north were hardly touched. Now, in August 1943, after the shorter nights of
summer, Harris was ready to start with his main effort against the German
capital. The tonnage of bombs he would be able to deliver to Berlin in the
coming winter would be more than fifteen times greater than the tonnage dropped
in all of the preceding years of the war.
German historians stress how the slow expansion of the
British bomber effort over the early years of the war enabled the German
authorities to develop both the armed defences of their cities and the local
air-raid services without ever being overwhelmed - at least, not until the
recent disaster at Hamburg. Berlin, with its gradual introduction to the
experience of being bombed and with the priorities afforded to a capital city,
was particularly well prepared to meet the coming test.
The preparations received an urgent boost from the
experiences of Hamburg three weeks earlier. Evacuation of children before then
had been a voluntary matter; the result had not been effective, and many of the
children sent away in the early days later returned. But after Hamburg,
Goebbels, who besides being Minister of Propaganda was also Gauleiter of
Berlin, ordered that all children and young mothers were to leave the city.
Entire schools, children and teachers together, went off to the east, out of
range of the British bombers. The school buildings thus emptied would become
valuable emergency hospitals and collecting centres for the people bombed out
of their homes in the coming raids. Because of the pressure on the railways,
this mass evacuation was not complete by the time the first R. A. F. raids
came, but it continued with even more urgency after the first series of raids
and would be complete before the Battle of Berlin was resumed in November. A
total of 790,000 women and children left, an exodus which saved many lives and
reduced the pressure on Berlin's services during the main battle. This was in
direct contrast to the recent Hamburg experience, when the children of that
city had figured prominently in the huge death toll.
Berlin was and still is a city of flats (apartments to
Americans), vast numbers of four-, five- or six-storeyed blocks filling street
after street, and it would be in these flats and in their basements and
courtyards that the outcome of the battle would be decided. The life of Hamburg
had been temporarily stopped because its housing had been destroyed by fire. In
those August days, the people of Berlin worked hard to learn the lessons of
Hamburg and make their homes as fireproof as possible. Each family in a block
had a partitioned section of the building's attic; now, all belongings had to
be removed from these, and the Todt Organisation then came and ripped down the
partitioned walls of the attics to enable incendiary bombs to be reached. Fresh
supplies were added to the sand and water which every family was obliged to
have in their flat and corridor. Berlin was particularly well equipped with
air-raid shelters. As in London, the underground railway stations- in Berlin
the U-Bahn - provided deep and safe shelter for thousands of people. But the
Berliners had an advantage over the people of London ; every block of flats had
a large basement area and these became sturdy air-raid shelters for the
families upstairs. No German city dweller of the war years will forget the
countless hours spent with their neighbours in those basement shelters. To
avoid being trapped in a shelter by rubble-blocked exits, holes were knocked
through the walls separating each basement. These holes were then re-covered, to
preserve the privacy of each shelter, but only with a thin layer of easily
removable bricks. In this way, the people in a threatened shelter could move
from one basement to another, the whole length of a street if necessary, to
find an unblocked exit.
Again, comparison can be made with both London and Hamburg.
Berlin was a more modern city, the streets of its residential districts were
wider, with more room for an incendiary-bomb attack to waste itself and less
chance of the rubble blocking the streets to fire-engines or of fire leaping
from one side of the street to the other.
There were more open spaces. There were no streets of the
flimsy terraced houses which had suffered so badly from high explosive bombs in
the London 'Blitz', and the Berlin blocks of flats were acknowledged to be of
sounder construction than those in Hamburg which had burnt so fiercely in the
Firestorm. Then there were the Flak and the searchlights - the armed defence of
the city. Berlin was known to all Bomber Command men as 'the Big City' because
of the extent of that defence. Flying Officer R. E. Luke, of 426 Squadron, was
a bomb aimer who had to fly over Berlin.
The murmur which swept through the briefing room when the
target map of Berlin was revealed paid tribute to the severity of the defences,
which, particularly on a cloudless night, struck fear into the hearts of those
crews ordered to attack it. It seemed to us that only the best German personnel
were posted to defend the city. An enormous cone of searchlights ringed the
city, which could be seen a long way off, and it did not seem possible to
breach them. In all our thirty-three operations we encountered no target more
heavily defended than Berlin.
Flight Lieutenant R. B. Leigh was another bomb aimer, in 156
Squadron.
Lying in the nose of a
Lancaster on a visual bomb run over Berlin was probably the most frightening
experience of my lifetime. Approaching the target, the city appeared to be
surrounded by rings of searchlights, and the Flak was always intense. The
run-up seemed endless, the minutes of flying 'straight and level' seemed like
hours and every second I expected to be blown to pieces. I sweated with fear,
and the perspiration seemed to freeze on my body.
A Bomber Command map of the period shows that the Flak area
around Berlin measured forty miles across, and the searchlight belt around it
was sixty miles wide! Certainly no other target in Germany was better defended
than Berlin, though some Bomber Command men say that the Ruhr defences were of
comparable strength.
Some aspects of the Berlin defences are of particular
interest. The Flak defences had been installed early in the war, with an outer
and an inner ring of guns. When the R. A. F. started to use a 'bomber stream'
this system was no longer suitable, and the guns now operated under combined
control and simply filled various ordered sections of the sky with a box
barrage, although bombers which arrived early, stragglers or those caught in
searchlights could still be engaged by aimed fire. The main feature of the old
inner ring of guns was twenty-four massive 128-millimetre guns mounted in pairs
on three Flak towers built in parks in the Zoo, Friedrichshain and Humboldthain
districts. These guns had been developed by the local Borsigwerke factory. The
eight guns on each tower could fire a salvo every ninety seconds, to a maximum
ceiling of 45,000 feet (14,800 metres) and, when the eight shells exploded in
the planned pattern, they had a lethal zone of 260 yards (240 metres) across.
The gun platform crews on the towers were all trained German soldiers, unlike
most German Flak batteries which had many pressed Russian prisoners and German
schoolboys in their crews; the only Russians were down in the basement
ammunition chambers, loading the shell hoists. Many of the gunners on the
towers were from a Hamburg unit with much to avenge.
The construction of the towers themselves, by the Todt
Organisation on plans by Speer, had commenced as early as 1940. Hitler wished
to show the people of Berlin and of the world that the city was 'Fortress Berlin'
which would survive the war and last for ever. Hamburg and Vienna were the only
other places to be blessed with such massive edifices. The Flak towers in
Berlin were to be the first buildings of the proposed post-war remodelled city
named Germania which would replace old Berlin. The towers had thick concrete
walls, steel windows, air-conditioning and an independent Daimler-Benz
generating plant six metres underground. All had a hospital floor, and the Zoo
tower had one level in which the most valuable of Berlin's art treasures were
stored. The local residents were, at first, not happy to see their parks
disfigured in this way but they were later to be well pleased when certain
levels in the towers were thrown open to the public as air-raid shelters. The Humboldthain
tower had passages leading to the nearby Gesundbrunnen Station, one of the
deepest of the U-Bahn system. Up to 21,000 people at a time would take shelter
in the combined tower and U-Bahn during the coming winter.
Another interesting aspect of Berlin's anti-bomber defences
is the extent of the decoy methods employed. Decoy fire sites were a feature of
every German city, but Berlin is believed to have had fifteen such sites,
including one particularly large one at Staaken, on the western approaches to
the city, which was based on the sets of a prewar film studio. One wartime
schoolboy Flakhilfer asked about the wartime rumour that one night several
bombers separated from the main stream and dropped some wooden bombs on the
Staaken decoy site!
There was another, more serious 'decoy' story I was told in
Berlin that I had not encountered before. The Germans realized that the lakes
around Berlin were an important aid to the British H2S radar operators.
Consideration was given during the summer of 1943 to covering over these lakes
to prevent their distinctive radar reflections being used by the bombers. This
was not possible because of the amount of material required, but the Germans
did produce large numbers of timbered floats, each in a cruciform shape about
five metres across, which were moored at about 300-yard intervals, certainly on
the Tegeler See and probably on the Havel too. These two large lakes were on
the westerly route into Berlin. The effectiveness of these floats - called
Tripel- Spiegel- is not known, but they may have contributed to the
difficulties encountered by the Pathfinders in establishing their positions on
the marking runs into Berlin that winter.
So Berlin - with its tough population of mainly Prussian
stock, its great war factories and government buildings, its stoutly
constructed housing, its gradual introduction to the bombing war, its well
established fire and air-raid services, its Flak towers and underground
shelters, its powerful gun and searchlight defences, its range of decoy devices
- Berlin awaited the arrival of the bombers.
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