Al Montestruc
2003-09-06 05:43:19 UTC
Up front let me state that I got most of this from "What If 2" Edited
by Robert Cowley (2001) a compilation of essays by
“eminent” historians as to major plausible branching
points in history. One Mr. David Kahn who wrote “The
Codebreakers” and “Seizing the Enigma” writes that
it is very plausible that Enigma would have remained largely uncracked
without the efforts of Marian Rejewski in Poland, and later Turing,
Welchman and others in the UK. IMHO as all the efforts in the UK
followed well after the Polish cracking of the basic mechanisms of
Enigma, those efforts would never take place w/o Rejewski. So IMHO if
Rejewski gets run over by a truck, or just has a bad day, then enigma
is never cracked. What if?
According to Khan, one very clear result he sees of this is that El
Alamein and consequently Egypt falls to the Germans in October of
’42. The reason being that IOTL Rommel ran short of fuel
because ULTRA decrypts were being used to home allied submarines and
aircraft in on tanker after tanker delivering fuel to the Afrika Corp.
Also, through ULTRA decrypts, Montgomery knew of Rommel’s fuel
shortage in detail, and could plan his operations to take advantage of
this knowledge, and know the Germans could not pursue allied forces
far, and could plan his operations to waste German fuel, and attack
when they ran out.
In addition, according to Kahn, German cryptography IOTL had cracked
the U.S. Military Attaché code. IOTL they got very detailed
dispositions of British military forces in Egypt by radio intercepts
of American transmissions. The British forces were reported in detail
by the US military attaché in Egypt to Washington by encrypted radio
traffic, which was read by the Germans. This intelligence was
promptly relayed to Rommel by radio encrypted by Enigma. Of course
IOTL the fact that the US military Attaché code was broken was made
obvious by the Ultra decrypts and the leak plugged quickly.
Furthermore the British were aware of what the Germans knew.
Now imagine that Rejewski did not exist, or just does not come up with
the ideas needed, and Enigma is never cracked. While some of the
tankers going to fuel the Afrika Corp will be sunk, far fewer will
given that the sailing dates and escort rendezvous points and times
will not be known to the Allies, and neither will the fact that Rommel
was becoming short of fuel, (which set off the use of Enigma to home
subs and aircraft in on tankers as opposed to other traffic) while at
the same time Rommel will have detailed knowledge of British forces
and their deployment in Egypt, and the British know nothing of it.
Further, we can anticipate more such information will fall in German
hands until someone on the allied side figures out that the U.S. code
has been broken, which might take years if the Germans are careful how
they use the information.
Furthermore on the port facilities limit argument that Phil has raised
when any discussion of changes in flow of supplies is brought up has
merit when discussing solid supplies in pallets or boxes. When
discussing a liquid that can be pumped through a hose from a seagoing
tanker, to a tank farm or even to a beach where tanker trucks are
filled, the objection has much less merit. Tankers have the
facilities to pump the product they carry, and commonly carry long
lengths of large hose for transfers of oil from one tanker to another.
This is less true in peacetime and much less true now in peacetime as
environmental laws are much more strict. But in 1942 in the middle
of a war zone? Oil spills on beaches would not be an issue much
thought would be wasted on.
Thus we can be sure that the fuel that Rommel was starved for would
not be a limit w/o the cracking of Enigma.
In the end of course, the Germans will lose the war in August or
perhaps September of 1945 when the bomb becomes available. But the
effects on the intermediate period will be significant. If Egypt and
Suez falls, the western Med becomes firmly Axis controlled. Probably
Palestine, Trans-Jordon, Syria and Iraq fall, if Hitler wants them, by
mid 1943. Probably Turkey can be shoehorned into the war on the Axis
side by then as well with uncomfortable results for the Russians. The
fight for west North Africa and Italy will be very different and much
more difficult for the Allies. I suspect that Italy will not be
invaded on schedule, and possibly not at all till after the bomb is
dropped. Thoughts??
By the way, according to Khan the Afrika Corp was using 300 tons of
petrol per day of normal activity and 600 tons per day of offensive
operations.
by Robert Cowley (2001) a compilation of essays by
“eminent” historians as to major plausible branching
points in history. One Mr. David Kahn who wrote “The
Codebreakers” and “Seizing the Enigma” writes that
it is very plausible that Enigma would have remained largely uncracked
without the efforts of Marian Rejewski in Poland, and later Turing,
Welchman and others in the UK. IMHO as all the efforts in the UK
followed well after the Polish cracking of the basic mechanisms of
Enigma, those efforts would never take place w/o Rejewski. So IMHO if
Rejewski gets run over by a truck, or just has a bad day, then enigma
is never cracked. What if?
According to Khan, one very clear result he sees of this is that El
Alamein and consequently Egypt falls to the Germans in October of
’42. The reason being that IOTL Rommel ran short of fuel
because ULTRA decrypts were being used to home allied submarines and
aircraft in on tanker after tanker delivering fuel to the Afrika Corp.
Also, through ULTRA decrypts, Montgomery knew of Rommel’s fuel
shortage in detail, and could plan his operations to take advantage of
this knowledge, and know the Germans could not pursue allied forces
far, and could plan his operations to waste German fuel, and attack
when they ran out.
In addition, according to Kahn, German cryptography IOTL had cracked
the U.S. Military Attaché code. IOTL they got very detailed
dispositions of British military forces in Egypt by radio intercepts
of American transmissions. The British forces were reported in detail
by the US military attaché in Egypt to Washington by encrypted radio
traffic, which was read by the Germans. This intelligence was
promptly relayed to Rommel by radio encrypted by Enigma. Of course
IOTL the fact that the US military Attaché code was broken was made
obvious by the Ultra decrypts and the leak plugged quickly.
Furthermore the British were aware of what the Germans knew.
Now imagine that Rejewski did not exist, or just does not come up with
the ideas needed, and Enigma is never cracked. While some of the
tankers going to fuel the Afrika Corp will be sunk, far fewer will
given that the sailing dates and escort rendezvous points and times
will not be known to the Allies, and neither will the fact that Rommel
was becoming short of fuel, (which set off the use of Enigma to home
subs and aircraft in on tankers as opposed to other traffic) while at
the same time Rommel will have detailed knowledge of British forces
and their deployment in Egypt, and the British know nothing of it.
Further, we can anticipate more such information will fall in German
hands until someone on the allied side figures out that the U.S. code
has been broken, which might take years if the Germans are careful how
they use the information.
Furthermore on the port facilities limit argument that Phil has raised
when any discussion of changes in flow of supplies is brought up has
merit when discussing solid supplies in pallets or boxes. When
discussing a liquid that can be pumped through a hose from a seagoing
tanker, to a tank farm or even to a beach where tanker trucks are
filled, the objection has much less merit. Tankers have the
facilities to pump the product they carry, and commonly carry long
lengths of large hose for transfers of oil from one tanker to another.
This is less true in peacetime and much less true now in peacetime as
environmental laws are much more strict. But in 1942 in the middle
of a war zone? Oil spills on beaches would not be an issue much
thought would be wasted on.
Thus we can be sure that the fuel that Rommel was starved for would
not be a limit w/o the cracking of Enigma.
In the end of course, the Germans will lose the war in August or
perhaps September of 1945 when the bomb becomes available. But the
effects on the intermediate period will be significant. If Egypt and
Suez falls, the western Med becomes firmly Axis controlled. Probably
Palestine, Trans-Jordon, Syria and Iraq fall, if Hitler wants them, by
mid 1943. Probably Turkey can be shoehorned into the war on the Axis
side by then as well with uncomfortable results for the Russians. The
fight for west North Africa and Italy will be very different and much
more difficult for the Allies. I suspect that Italy will not be
invaded on schedule, and possibly not at all till after the bomb is
dropped. Thoughts??
By the way, according to Khan the Afrika Corp was using 300 tons of
petrol per day of normal activity and 600 tons per day of offensive
operations.