Question: What is the birthdate of the author of the short story that A Soldier's Sweetheart was based on?

Context articles: Battles in the Desert
A Soldier's Sweetheart
Soldier Boy (short story)
Dilman Dila
Mathieu Cailler
Inconstant Moon
Soldier from Tomorrow
Two Kinds
Carmela (film)
Tim O'Brien (author)

Battles in the Desert, or "Las batallas en el desierto", is a short story written by Mexican author José Emilio Pacheco.
 The short story was first published in the Saturday edition of the Uno Más Uno, a Mexican newspaper, on June 7, 1980, but was published as a short story by Era the following year.
 The short story is narrated by Carlos, as an adult, recounting his memories as a boy growing up in Mexico City in the late 1940s and 1950s.
 In particular, his experiences and the events that unfolded after falling in love with one of his classmate’s mother comprise the central narrative of the short novel.
A Soldier's Sweetheart is a 1998 movie starring Kiefer Sutherland, Skeet Ulrich, and Georgina Cates.
 It is based on a short story by Tim O'Brien, "Sweetheart of the Song Tra Bong."
 The story was part of his award winning book, "The Things They Carried".
"Soldier Boy" (also known as "X Minus One #71: 56-10-17 Soldier Boy") is a 1953 science fiction short story by American author Michael Shaara, about a soldier who, when sent on a routine patrol to a colonized world, saves the planet from an alien and its robot attack devices.
 Despite an ingrained contempt for the military that arose as part of conditioning to avoid war, the human colonists gradually assist the soldier when strange occurrences suggest they are not alone on the planet and may be, like several other colony planets, under threat of extermination by outside forces.
 It was originally published in the July 1953 issue of "Galaxy Science Fiction".
 It is also the title of a 1982 collection of Shaara's short stories
Dilman Dila is a Ugandan writer, film maker and a social activist.
 He is the author of a collection of short stories, "A Killing in the Sun", and of two novellas, "Cranes Crest at Sunset", and "The Terminal Move".
 He was shortlisted for the 2013 Commonwealth Short Story Prize for "A Killing in the Sun", longlisted for the Short Story Day Africa prize, 2013, and nominated for the 2008 Million Writers Awards for the short story "Homecoming".
 He was longlisted for the BBC International Radio Playwriting Competition with his first radio play, "Toilets are for Something Fishy".
 His film "The Felistas Fable" (2013) won four awards at the Uganda Film Festival 2014, for Best Screenplay, Best Actor, Best Feature Film, and Film of the Year (Best Director).
 It won two nominations at the Africa Movie Academy Awards for Best First Feature by a Director, and Best Make-up Artist.
 It was also nominated for the African Magic Viewers Choice Awards for Best Make-up artist, 2013.
 His first short film, "What Happened in Room 13", is one of the most watched African films on YouTube.
 In 2015, he was longlisted for the Inaugural Jalada Prize for Literature for his story "Onen and his Daughter".
Mathieu Cailler (born June 16, 1984) is a French-American writer of poetry and prose.
 A graduate of Vermont College of Fine Arts, he has been a finalist for the "Glimmer Train" New Writers Award, the New Rivers Press American Fiction Prize, and the "Carve Magazine" Raymond Carver Short Story Contest.
 He is also the recipient of a Short Story America Prize for Short Fiction and a Shakespeare Award for Poetry.
 He is the author of "Clotheslines" (Red Bird Press), "Shhh" (ELJ Publications), and the collection of short stories, "Loss Angeles" (Short Story America Press).
Inconstant Moon is a science fiction short story collection by American author Larry Niven that was published in 1973.
 "Inconstant Moon" is also a 1971 short story that is included in the collection.
 The title is a quote from the balcony scene in William Shakespeare's "Romeo and Juliet".
 The collection was assembled from the US collections "The Shape of Space" and "All the Myriad Ways".
 The short story won the 1972 Hugo Award for best short story.
"Soldier From Tomorrow" (later reprinted under the title "Soldier") is a 1957 science fiction short story by Harlan Ellison, originally published in "Fantastic Universe" in October 1957.
 Its protagonist is Qarlo Clobregnny, a soldier from thousands of years in the future, who has been conditioned from birth by the State (the "Tri-Continenters") solely to fight and kill the enemy (the "Ruskie-Chinks").
 After time traveling to the present, Qarlo is "civilized" by Lyle Sims, a government agent, and Soames, a philologist, and eventually goes on a lecture tour to warn of the coming armageddon.
 Ellison loosely adapted the story for his script for the 1964 "The Outer Limits" episode "Soldier".
"Two Kinds" is a short story from the book "The Joy Luck Club" by Amy Tan.
 It was first published in 1989.
 The short story outlines the main character Jing-mei Woo’s childhood and the effects of her mother’s high expectations for her life.
 It is clear that some of the events in the short story reflect events that happened in the author’s life.
 For example, the main character's mother left China, leaving behind her family and children.
 The same is true with Amy Tan's mother.
 In 1993, a movie based on the book was made.
Carmela is a 1942 Italian drama film directed by Flavio Calzavara, starring Doris Duranti and Pál Jávor.
 It is set on a small island in the Strait of Sicily in 1893, and tells the story of a young woman who is seduced by a soldier who promises to marry her, only to be abandoned soon after.
 When a new soldier is stationed on the island she tries to convince him to make the first soldier return.
 The film is based on Edmondo De Amicis' 1869 short story "Vita Militare".
William Timothy "Tim" O'Brien (born October 1, 1946) is an American novelist.
 He best known for his "The Things They Carried" (1990), a collection of linked short stories.
 These semi-autobiographical stories were inspired by O'Brien's experiences in the Vietnam War.
 In 2010 the "New York Times" described O'Brien's book as a Vietnam classic.
 In addition, he is known for his war novel, "Going After Cacciato" (1978), also about wartime Vietnam, and later novels about postwar lives of veterans.