Question: Vladmir Filatov was able to save the eyesight of sniper Vasily Zaytsev during what battle?

Context paragraphs:
Vladimir Filatov: Vladimir Petrovich Filatov (Russian: Владимир Филaтoв , 15 [O.S. 27] February 1875, Mikhaylovka, Penza Governorate, Russian Empire - 30 October 1956, Odessa, Ukrainian SSR) was a Russian and Ukrainian ophthalmologist and surgeon best known for his development of tissue therapy.  He introduced the tube flap grafting method, corneal transplantation and preservation of grafts from cadaver eyes.  He founded the Institute of Eye Diseases & Tissue Therapy in Odessa, Soviet Union (today Ukraine).  Filatov is also credited for restoring Vasily Zaytsev's sight when he suffered an injury to his eyes from a mortar attack during Battle of Stalingrad.

Ilham Zakiyev: Ilham Azizaga oglu Zakiyev (Azerbaijani: "İlham Zəkiyev" , born 3 March 1980, Sumgayit) is an Azerbaijani blind judoka.  He began studying judo when he was 11 years of age.  In 1998, when he was 18, he went to serve in Azerbaijani army in the Aşağı Əbdürrəhmanlı village of Fizuli Rayon.  He served on the frontline of the conflict zone.  On 4 February 1999, he was wounded by a bullet to the head by an Armenian sniper, while on a combat mission.  The bullet passed through the entire head, entering from the left and exiting via the right temple.  As a result, Zakiyev has completely lost his eyesight.  After a long rehabilitation he returned to the sportç but as a Paralympian.  He is the holder of a 6-dan black belt.

Nova N 176: Nova N 176 is an undeciphered manuscript codex held at the Institute of Oriental Manuscripts (IOM) of the Russian Academy of Sciences in Saint Petersburg, Russia.  The manuscript, of uncertain provenance, entered the collection of the IOM in 1954, and for more than fifty years nobody was able to identify with certainty what language or script the text of the manuscript was written in.  It was only in 2010 that IOM researcher Viacheslav Zaytsev was able to demonstrate that the manuscript is written in the Khitan large script, one of two largely undeciphered writing systems used for the now-extinct Khitan language during the 10th–12th centuries by the Khitan people, who founded the Liao Empire in north-eastern China.

Paarthaal Pasi Theerum: Balu (Sivaji Ganesan) and Velu (Gemini Ganesan) work in British Indian Air Force and are fighting with allied forces in World War II.  Their plane crashes due to bombs dropped by Japanese.  Velu is grievously injured.  Balu carries him 50 miles to a village in assam.  There Velu regains consciousness and his health starts improving under the care of Indroma (Savithri) and her father, in whose house they are staying.  Japanese soldiers come in search of these two.  Balu hides Velu and when Japanese are about to discover Velu, he gives himself up to save Velu.  Velu recovers, and marries Indroma, teaches her Tamil and calls her Indra.  velu is found my members of British Indian army the day after his wedding and has to leave with them, leaving his wife behind.  Indra is pregnant and gives birth to a child, however, their village is bombed and she loses her eyesight.  When Velu comes in search of his wife, he only sees the ruins of the former village and grieves thinking his wife is dead and goes to Chennai to his maternal uncle.

Toms Shoes: Toms (stylized as TOMS) is a for-profit<ref name="Fairfield Citizen - For/Non Profit"> </ref> company based in Playa Del Rey, California.  The company was founded in 2006 by Blake Mycoskie, an entrepreneur from Arlington, Texas.  The company designs and sells shoes based on the Argentine alpargata design, eyewear, coffee, apparel, and handbags.  When Toms sells a pair of shoes, a new pair of shoes is given to an impoverished child, when Toms sells eyewear, part of the profit is used to save or restore eyesight for people in developing countries.  The company launched TOMS Roasting Co. in 2014, and with each purchase of TOMS Roasting Co.  coffee, the company works with other organizations that they refer to as "giving partners" to provide 140 liters of safe water, equal to a one week supply, to a person in need.  In 2015, TOMS Bag Collection was launched to help contribute to advancements in maternal health.  Purchases of TOMS Bags help provide training for skilled birth attendants and distribute birth kits containing items that help women practice safe childbirth.

Sniper Elite V2: Sniper Elite V2 is a third-person tactical shooter stealth video game developed by Rebellion Developments and published by 505 Games in 2012.  It is a sequel/remake of its 2005 predecessor "Sniper Elite", which takes place in the same timeframe and location—the Battle of Berlin in April–May 1945—but with an altered narrative.  The game's story follows an American Office of Strategic Services officer who must capture or eliminate the scientists involved in the German V-2 rocket program while the Red Army invades.  A prequel named "Sniper Elite III" was released in 2014.

Erwin König: Erwin König and Heinz Thorvald are names of an apocryphal Wehrmacht sniper allegedly killed by the Soviet sniper Vasily Zaytsev during the Battle of Stalingrad.

Vasily Zaytsev: Vasily Grigoryevich Zaytsev; 23 March 1915 – 15 December 1991) was a Soviet sniper and a Hero of the Soviet Union during World War II.  Prior to 10 November, he killed 32 Axis soldiers with a standard-issue rifle.  Between 10 November 1942 and 17 December 1942, during the Battle of Stalingrad, he killed 225 enemy soldiers, including 11 snipers.

Battle of Suzdal: The Battle of Suzdal or the Battle of the Kamenka River was fought of July 7, 1445 between Russians under Vasily II and Tatars troops of Oluğ Möxämmäd, invaded the principality of Nizhny Novgorod.  Russians were defeated by troops of beg Mäxmüd, who became Mäxmüd of Kazan some after the battle.  Vasily was taken prisoner and was set free only after the enormous ransom was paid.  He also promised restitution of the lands of Mishar Yurt, that were bought from Tokhtamysh in 1343.  Qasim Khanate was founded there to become a buffer state and the vassal of Muscovy later.

Enemy at the Gates: Enemy at the Gates is a 2001 French-American war film written and directed by Jean-Jacques Annaud and based on William Craig's 1973 nonfiction book "", which describes the events surrounding the Battle of Stalingrad in the winter of 1942 and 1943.  The film's main character is a fictionalized version of sniper Vasily Zaytsev, a Hero of the Soviet Union during World War II.  It includes a snipers' duel between Zaytsev and a "Wehrmacht" sniper school director, Major Erwin König.

Supporting paragraphs: Vladimir Filatov Vasily Zaytsev
Answer: Battle of Stalingrad