Question: Death of a Soldier is a film based on the life of an American serial killer known by what nickname?

Context paragraphs:
Roger Kibbe: Roger Reece Kibbe (born 1941) is an American serial killer known as the "I-5 Strangler".  Kibbe found all but one of his victims on the freeways around Sacramento, California.  On May 10, 1991, Kibbe was sentenced to 25 years to life imprisonment for the murder of Darcie Frackenpohl to serve his time at the Pleasant Valley State Prison.

Eddie Leonski: Edward Joseph Leonski (December 12, 1917 – November 9, 1942) was an American soldier and serial killer responsible for the strangling murders of three women in Melbourne, Australia.  Leonski was known as the "Brownout Strangler", given Melbourne's wartime status of keeping low lighting (not as stringent as a wartime blackout).  His self-confessed motive for the killings was a twisted fascination with female voices, especially when they were singing, and his claim that he killed the women to "get at their voices."

David Carpenter: David Joseph Carpenter (born May 6, 1930), a.k.a. the Trailside Killer, is an American serial killer known for stalking and murdering his victims in State Parks in California.  Carpenter killed several people on hiking trails near San Francisco, California.  Carpenter killed at least 10 people, with one attempted victim, Steven Haertle, surviving.  Carpenter used a .38 caliber handgun in all but one of the killings, with a .44 caliber handgun being used in the killing of Edna Kane on Mount Tamalpais.

Gary Ridgway: Gary Leon Ridgway (born February 18, 1949) is an American serial killer known as the Green River Killer.  He was initially convicted of 48 separate murders and is presumed to be responsible for more than 90.  As part of his plea bargain, an additional conviction was added, bringing the total number of convictions to 49, making him the most prolific American serial killer in history according to confirmed murders.  He murdered numerous women and girls in Washington State during the 1980s and 1990s.

George Chapman (murderer): George Chapman (14 December 1865 – 7 April 1903) was a Polish serial killer known as the Borough Poisoner.  Born Seweryn Antonowicz Kłosowski in Congress Poland, he moved as an adult to England, where he committed his crimes.  He was convicted and executed after poisoning three women, but is remembered today mostly because some police officers suspected him of being the notorious serial killer Jack the Ripper.

Vaughn Greenwood: Vaughn Orrin Greenwood (born 1944) is an American serial killer known by the nickname the "Skid Row Slasher."

Randy Steven Kraft: Randy Steven Kraft (born March 19, 1945) is an American serial killer known as the "Scorecard Killer" and the "Freeway Killer" who committed the rape, torture, mutilation, and murder of a minimum of 16 young men in a series of killings spanning between 1972 and 1983, the majority of which had been committed in California.  Kraft is also believed to have committed the rape and murder of up to 51 further boys and young men.  He was convicted in May 1989 of murdering 16 victims and is currently incarcerated upon death row at San Quentin State Prison in Marin County, California.

Death of a Soldier: Death of a Soldier is a 1986 Australian film based on the life of American serial killer Eddie Leonski.  The film was shot using locations around Melbourne, Victoria.

Manhunter (film): Manhunter is a 1986 American crime horror film based on the novel "Red Dragon" by Thomas Harris.  Written and directed by Michael Mann, it stars William Petersen as FBI profiler Will Graham.  Also featured are Tom Noonan as serial killer Francis Dollarhyde, Dennis Farina as Graham's FBI superior Jack Crawford, and Brian Cox as incarcerated killer Hannibal Lecktor.  The film focuses on Graham coming out of retirement to lend his talents to an investigation on Dollarhyde, a killer known as the "Tooth Fairy".  In doing so, he must confront the demons of his past and meet with Lecktor, who nearly counted Graham amongst his victims.

Lawrence Singleton: Lawrence Bernard "Larry" Singleton (July 28, 1927 – December 28, 2001) was an American serial killer known for perpetrating an infamous rape and mutilation of an adolescent hitch-hiker, Mary Vincent, in California in 1978.  Released from prison after serving only eight years of his fourteen-year sentence, he went on to murder a woman in Florida, for which he was sentenced to death in 1997.  He died in 2001 of natural causes before the sentence could be carried out.  It is believed that he may have killed over a dozen women in his lifetime.

Supporting paragraphs: Death of a Soldier Eddie Leonski
Answer: "Brownout Strangler"