Question: What was the secret name of the officers that were aware of the arrangements for d-day intrusion of Normandy?
About the article "Invasion of Normandy", section "Codenames".

Candidate passages:
The Ranger Assault Group was a provisional regiment of U.S. Army Rangers that was formed for the D-Day landings in Normandy, France, in World War II. 
"For the founder of the department store chain, see Marshall Field.
"Marshall Fields was involved in a 1974 Christmas Day intrusion into the grounds of the White House complex.
Although he eventually surrendered, Fields threatened White House security during negotiations that lasted for four hours.
Along with an intrusion by Robert K. Preston in February of the same year, this incident sparked a security review by the U.S. Secret Service. 
The Allies assigned codenames to the various operations involved in the invasion.
"Overlord" was the name assigned to the establishment of a large-scale lodgement on the northern portion of the Continent.
The first phase, the establishment of a secure foothold, was codenamed "Neptune".
According to the D-day museum:
""The armed forces use codenames to refer to the planning and execution of specific military operations.
Operation Overlord was the codename for the Allied invasion of northwest Europe.
The assault phase of Operation Overlord was known as Operation Neptune.
(...) Operation Neptune began on D-Day (June 6th 1944) and ended on 30 June 1944.
By this time, the Allies had established a firm foothold in Normandy.
Operation Overlord also began on D-Day, and continued until Allied forces crossed the River Seine on 19 August 1944.
""
Officers with knowledge of D-Day were not to be sent where there was the slightest danger of being captured.
These officers were given the codename of "Bigot", derived from the words "To Gib" (To Gibraltar) that was stamped on the papers of officers who took part in the North African invasion in 1942.
On the night of 27 April, during Exercise Tiger, a pre-invasion exercise off the coast of Slapton Sands beach, several American LSTs were attacked by German E boats and among the 638 Americans killed in the attack and a further 308 killed by friendly fire, ten "Bigots" were listed as missing.
As the invasion would be cancelled if any were captured or unaccounted for, their fate was given the highest priority and eventually all ten bodies were recovered.
The Longest Day is a book by Cornelius Ryan published in 1959, telling the story of D-Day, the first day of the World War II invasion of Normandy.
It includes details of Operation Deadstick, the "coup de main" operation by gliderborne troops to capture both Pegasus Bridge and Horsa Bridge before the main assault on the Normandy beaches.
It sold tens of millions of copies in eighteen different languages.
The book is not a dry military history, but rather a story about people, and reads at times like a novel.
It is based on interviews with a cross-section of participants, including U.S., Canadian, British, French and German officers and civilians.
The book begins and ends in the village of La Roche-Guyon.
The book refers to the village as being the most occupied village in occupied France and states that for each of the 543 inhabitants of La Roche-Guyon there were more than 3 German soldiers in the village and surrounding area.
Field Marshal Erwin Rommel commander-in-chief of Army Group B had his headquarters in the castle of the village which was the seat of the Duc de La Rochefoucauld.
Ryan's book is divided into three parts: the first part is titled The Wait, the second part is named The Night and the third part is named The Day.
The book includes a section on the casualties of D-Day and also lists the contributors including their service details on the day of the invasion and their occupations at the time the book was first published.
Researchers spent almost three years locating survivors of D-Day and over 3000 interviews were undertaken in the United States, Canada, Great Britain, France and Germany.
383 accounts of D Day were used in the text of the book.
Senior Allied officers who assisted the author included General Maxwell D. Taylor, Lieutenant General James M. Gavin, Lieutenant General Sir Frederick E. Morgan and General Sir Richard Nelson Gale.
German officers who assisted with the book included Generaloberst Franz Halder, Hauptmann Hellmuth Lang and General der Infanterie Günther Blumentritt.
The author also used Allied and German post action reports, War diaries, histories and official records.
On 6 June 1965, the author published an article "More of The Longest Day" on Reader's Digest as a supplement.
Cornelius Ryan dedicated his book for all the men of D Day.
The book takes its name from a comment made by Erwin Rommel to his aide Hauptmann Helmuth Lang on 22 April 1944: "...the first 24 hours of the invasion will be decisive...the fate of Germany depends on the outcome...for the Allies, as well as Germany, it will be the longest day.
""The Longest Day" is also the name of a 1962 film based on the book, featuring many star actors. 
In computing, a wireless intrusion prevention system (WIPS) is a network device that monitors the radio spectrum for the presence of unauthorized access points "(intrusion detection)", and can automatically take countermeasures "(intrusion prevention)".