In the years following the "September Conspiracy," Hitler went from
success to success. His regime swallowed the remainder of
Czechoslovakia in March 1939 – although this was not ethnically
German. He ordered the invasion of Poland just six months later,
and a significantly larger army was crushed in just weeks. In
April 1940 his armed forces walked into Denmark and Norway,
overwhelming the ill-prepared defences of both neutral countries.
Then in May/June 1940 Hitler pulled off the miraculous: his Third
Reich conquered Belgium and Holland in just days, threw the British
Expeditionary Force off the Continent in weeks, and forced the French
to surrender in little more than a month of fighting. Hitler
controlled the Continent of Europe from the Arctic Circle to the
Mediterranean Sea. Never had a dictator been so popular, even
adored, and there were many who latter joined the Resistance to Hitler
– most notably Claus Graf Stauffenberg – who were so
euphoric about the dictator's successes that they dismissed all his
"minor" faults as irrelevant.
But not everyone in German shared this adulation of Hitler. A
tiny minority of Germans retained their moral principles and their
abhorrence of the immoral Nazi regime. They had no opportunity to
take action against the oppressive dictatorship, however, as long as
Hitler remained so successful and so popular.

Then
in June 1941 came the invasion of the Soviet Union. Although this
campaign was widely popular and initially went very well, by October
the offensive started to bog down. By the start of December 1941,
it had failed to reach either Moscow or St. Petersberg. On 6
December 1944, the Soviet Army opened a massive counter-offensive with
fresh troops just brought in from the Urals and beyond. They
exposed the extreme over-extension and exhaustion of the German
Wehrmacht, rolling the German front hundreds of kilometres
backwards. The retreating troops were confronted – often
for the first time – with the atrocities committed behind their
lines by the SS. The evidence of mass murders, the inhumane
treatment of prisoners of war, and the military setback soon created a
different psychological environment inside Germany. Those who had
always opposed the Nazis, men like Ludwig Beck and Friedrich Olbricht,
saw the first glimmer of hope that a coup against the Nazis might gain
sufficient popular support to have a chance of success.
In the winter of 1941/1942 General Friedrich Olbricht, the highly
decorated and audacious commander of the 24th Infantry Division, found
himself trapped in a desk job in Berlin. He was now the Chief of
the "General Army Office" – a central office with responsibility
for recruiting, organizing, arming, equipping, clothing, and otherwise
providing for the replacements that were sent to the now voracious
front. This position gave him command of no combat troops, but it
did put him in a position to oversee practically everything the
military was up to inside Germany. Olbricht convinced the Chief
of Counter Intelligence, Admiral Canaris, to convince Hitler that there
was a serious threat of revolt on the part of the millions of slave
labourers imported to work in the Reich from all the occupied
territories. Hitler in response ordered the Home Army (and hence
Olbricht) to develop a General Staff plan for suppressing such an
uprising. The plan was given the codename "Valkyrie."
Decades later, Axel von dem Bussche, a man who would later volunteer to
become a suicide bomber in order to eliminate Hitler, spoke with
enthusiasm and admiration of his first encounter with "Valkyrie."
Bussche by early 1942 was already an opponent of Hitler. He was
warned by a family friend (who was also an opponent of the Nazis) that
he was to obey any orders he got from a "certain" General Olbricht.
Bussche was a 1st Lieutenant at the time, and Olbricht was a
"three star" general. Since it was obvious to Bussche that he did not
need specific instructions from a friend to follow the military orders
of a general, he understood perfectly that the "orders" Olbricht was to
give him were not normal military orders at all but rather something
else again.


Then
one day in early spring 1942, Bussche, then serving as adjutant in a
replacement regiment stationed just outside of Berlin in Potsdam, got a
call saying that General Olbricht was on his way to visit. Now,
as Bussche worded it, the Chief of the GAO was as far above him as the
"dear God is from earth." Bussche knew at once that this visit
had nothing to do with official military duties – a suspicion
reinforced after the general's arrival by a series of harmless
questions and pleasant small talk that did not warrant the visit.
But then Olbricht suggested that Bussche and he "stretch their
legs." In the middle of an exercise field where no one could hear
them, Olbricht started to "educate" Bussche about "Valkyrie."
"Valkyrie" was in Bussche's words: "A well organised plan of the Home
Army that was to be used in the event that millions of forced labourers
in Germany rose up in revolt." But Bussche understood perfectly
well when Olbricht in his relaxed, Saxon inflection "explained" to
Bussche: "Now Valkyrie, that is for when the forced labourers
strike and we have to restore order, you understand?" And Bussche
dutifully assured the general, "Jawohl, Herr General." So
Olbricht continued smiling, "And if it gets really bad, then we'll have
to occupy the radio stations and the ministries in Berlin, you know
what I mean?" "Jawohl, Herr General." And so the
conversation continued until by the end, Bussche knew exactly what the
General expected of him – without ever hearing a single word that
could be construed as treason or even disloyalty.
Bussche would soon be transferred back to the Eastern Front and so the
timeframe for this meeting can be fixed without doubt to the late
spring of 1942. It took place at a time when German arms were
again on the advance, and the population had forgotten the winter of
their discontent. It took place at a time when Stauffenberg was
still convinced that Hitler could – and should – win the
war. But Olbricht, Bussche, Beck and other individuals remained
unswerving opponents of the Nazi regime, and although they were few and
far between they now had a plan, a plan that could and would be
employed to bring down the Nazis as soon as the necessary
pre-conditions had been created.
The preconditions for the successful implementation of a coup based on
Plan "Valkyrie" were two fold. First, there had to be a
reasonable degree of disillusionment with the regime to make the
population supportive of or at least neutral toward the removal from
power of Hitler and his henchmen. And second, but most important,
Hitler had to be dead first. It was no longer possible to
contemplate the mere arrest of Hitler. First, the Valkyrie Orders
could only be issued by the C-in-C of the Home Army if Hitler was
"incapacitated," and, second, the army was not freed of its personal
oath of "unconditional obedience" to Hitler unless he was no longer
among the living. Thus Hitler's assassination had to be the first
step of a coup d'etat.
Responsibility for the assassination was assigned by Beck and the
leadership of the evolving military conspiracy to the cell of anti-Nazi
opponents centered in the military Counter Intelligence Department and
led by Hans Oster. Oster's opposition to Hitler's policies
pre-dated the war. He had been in the minority among the men in
the September Conspiracy of 1938 that advocated Hitler's assassination
even at this early date. His opposition to Hitler's aggression
had been so great that he had taken the dramatic step of warning the
Dutch of the impending German invasion in 1940. By 1942, Oster's
hatred of Hitler and his regime was so intense that he was desperate to
kill the dictator and happy to provide the means for doing so in the
form of captured British plastic explosives. But access to the
increasingly cautious and reclusive dictator proved a greater challenge
than anyone had initially anticipated.