Problem: The Shadow is the name of a collection of serialized dramas, originally in 1930s pulp novels, and then in a wide variety of media, and it is also used to refer to the character featured in The Shadow media. One of the most famous adventure heroes of the 20th century United States, the Shadow has been featured on the radio, in a long-running pulp magazine series, in American comic books, comic strips, television, serials, video games, and at least five films. The radio drama included episodes voiced by Orson Welles. Originally simply a mysterious radio narrator who hosted a program designed to promote magazine sales for Street and Smith Publications, The Shadow was developed into a distinctive literary character, later to become a pop culture icon, by writer Walter B. Gibson in 1931.

In print, The Shadow's real name is Kent Allard, and he was a famed aviator who fought for the French during World War I. He became known by the alias the Black Eagle, according to The Shadow's Shadow (1933), although later stories revised this alias as the Dark Eagle, beginning with The Shadow Unmasks (1937). After the war, Allard finds a new challenge in waging war on criminals. Allard falsifies his death in the South American jungles, then returns to the United States. Arriving in New York City, he adopts numerous identities to conceal his existence.  One of the identities Allard assumes--indeed, the best known--is that of Lamont Cranston, a "wealthy young man-about-town." In the pulps, Cranston is a separate character; Allard frequently disguises himself as Cranston and adopts his identity (The Shadow Laughs, 1931). While Cranston travels the world, Allard assumes his identity in New York. In their first meeting, Allard, as The Shadow, threatens Cranston, saying he has arranged to switch signatures on various documents and other means that will allow him to take over the Lamont Cranston identity entirely unless Cranston agrees to allow Allard to impersonate him when he is abroad. Although alarmed at first, Cranston is amused by the irony of the situation and agrees. The two men sometimes meet in order to impersonate each other (Crime over Miami, 1940). The disguise works well because Allard and Cranston resemble each other (Dictator of Crime, 1941).  His other disguises include businessman Henry Arnaud, who first appeared in The Black Master (March 1, 1932), which revealed that like Cranston, there is a real Henry Arnaud; elderly Isaac Twambley, who first appeared in No Time For Murder; and Fritz, who first appeared in The Living Shadow (April 1931); in this last disguise, he sometimes takes the place of the doddering old slow-witted, uncommunicative janitor who works at Police Headquarters in order to listen in on conversations and to look at evidence.  For the first half of The Shadow's tenure in the pulps, his past and identity are ambiguous. In The Living Shadow, a thug claims to have seen the Shadow's face, and thought he saw "a piece of white that looked like a bandage." In The Black Master and The Shadow's Shadow, the villains both see The Shadow's true face and remark that The Shadow is a man of many faces with no face of his own. It was not until the August 1937 issue, The Shadow Unmasks, that The Shadow's real name is revealed.  In the radio drama, the Allard secret identity was dropped for simplicity's sake. On the radio, The Shadow was only Lamont Cranston; he had no other aliases or disguises.

What happened at the shadow's background?

Answer with quotes: He became known by the alias the Black Eagle, according to The Shadow's Shadow (1933),

Question:
Isaac Asimov (; c. January 2, 1920 - April 6, 1992) was an American writer and professor of biochemistry at Boston University. He was known for his works of science fiction and popular science. Asimov was a prolific writer who wrote or edited more than 500 books and an estimated 90,000 letters and postcards. His books have been published in 9 of the 10 major categories of the Dewey Decimal Classification.
Asimov attended New York City public schools from age 5, including Boys High School in Brooklyn. Graduating at 15, he went on to Seth Low Junior College, a branch of Columbia University in Downtown Brooklyn designed to absorb some of the Jewish and Italian-American students who applied to Columbia College, then the institution's primary undergraduate school for men with quotas on the number of admissions from those ethnic groups. Originally a zoology major, Asimov switched to chemistry after his first semester as he disapproved of "dissecting an alley cat". After Seth Low Junior College closed in 1938, Asimov finished his BS degree at University Extension (later the Columbia University School of General Studies) in 1939.  After two rounds of rejections by medical schools, Asimov in 1939 applied to the graduate program in chemistry at Columbia; initially rejected and then accepted only on a probationary basis, he completed his Master of Arts degree in chemistry in 1941 and earned a Doctor of Philosophy degree in biochemistry in 1948.  In between earning these two degrees, he spent three years during World War II working as a civilian at the Philadelphia Navy Yard's Naval Air Experimental Station, living in the Walnut Hill section of West Philadelphia from 1942 to 1945. In September 1945, he was drafted into the U.S. Army; if he had not had his birth date corrected, he would have been officially 26 years old and ineligible. In 1946, a bureaucratic error caused his military allotment to be stopped, and he was removed from a task force days before it sailed to participate in Operation Crossroads nuclear weapons tests at Bikini Atoll. He served for almost nine months before receiving an honorable discharge on July 26, 1946. He had been promoted to corporal on July 11.  After completing his doctorate and a postdoc year, Asimov joined the faculty of the Boston University School of Medicine in 1949 with a $5,000 (equivalent to $51,427 in 2017) salary, with which he remained associated thereafter. By 1952, however, he was making more money as a writer than from the university. The difference grew, and in 1958 Asimov stopped teaching to become a full-time writer. Being tenured, he retained the title of associate professor (which he had held since 1955), and in 1979, the university honored his writing by promoting him to full professor of biochemistry. Asimov's personal papers from 1965 onward are archived at the university's Mugar Memorial Library, to which he donated them at the request of curator Howard Gotlieb.  In 1959, after a recommendation from Arthur Obermayer, Asimov's friend and a scientist on the U.S. missile protection project, Asimov was approached by DARPA to join Obermayer's team. Asimov declined on the grounds that his ability to write freely would be impaired should he receive classified information. However, he did submit a paper to DARPA titled "On Creativity" containing ideas on how government-based science projects could encourage team members to think more creatively.
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Answer:
In September 1945, he was drafted into the U.S. Army; if he had not had his birth date corrected, he would have been officially 26 years old and ineligible.