A new article in Vanity Fair sheds light on famed war correspondent Marie Colvin's final days.

Colvin, who spent two decades reporting from the front lines of war for the Sunday Times, was killed in a shelling attack in the besieged city of Homs, Syria in late February. She was 56. Colvin phoned into the BBC and Anderson Cooper's CNN show just hours before the shelling attack that killed her.

French photojournalist Remi Ochlik was also killed during the attack. Sunday Times photographer Paul Conroy was traveling with Colvin in Syria and survived, as did French journalist Edith Bouvier of Le Figaro.

Colvin became legendary for her fearlessness and tenacity. Instantly recognizable for the eyepatch she wore after losing sight in her eye from a shrapnel wound in 2001, Colvin reported on the suffering of those trapped in the world's deadliest conflict zones. She remained true to her craft, telling a friend that she felt like "the last reporter in the YouTube world." Colvin's determination and focus was on full display in Syria, as Vanity Fair's Marie Brenner writes.

"Of all the trips we had done together this one was complete insanity," Conroy told Brenner.

When Conroy shared his concerns about their final trip together, Colvin made her intentions clear. "I'm going in, no matter what. I'm the reporter, you're the photographer. If you want, you can stay here," she said to him.

Brenner writes that Colvin learned that the army was "under orders to kill journalists" before she entered Syria, and considered this when deciding to go on the BBC and CNN when in Homs. She skyped with Richard Flaye, the man with whom she was currently involved.

"My god, what should I do?" Colvin asked Flaye. "It is a risk. If I go on the BBC and CNN, it is very possible that we will be targeted."

Conroy told Brenner that he "could feel the intensity of the shelling increasing not long after. He added, "We were directly targeted."

Brenner's piece includes some more tender moments from Colvin's final trip, including the last email she sent Flaye. "I will do one more week here, and then leave," she wrote. "Every day is a horror. I think of you all the time, and I miss you."

Marie Colvin’s Private War appears in the magazine's August 2012 issue. Instant access to the article is available on the Vanity Fair iPad App.

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  • People attend a memorial service for Marie Colvin, the Sunday Times war correspondent who was killed in Homs, Syria on Feb. 22, at St Martin-in-the-Fields church in central London, Wednesday, May 16, 2012. (AP Photo/Lefteris Pitarakis)

  • FILE - This undated file image made available Feb. 22, 2012 by the Sunday Times in London, shows journalist Marie Colvin. Funeral services for war correspondent Colvin will be held Monday, March 12, 2012, at St. Dominic Roman Catholic Church in Oyster Bay on New York's Long Island. (AP Photo/Sunday Times, File)

  • This combo shows a photo of American journalist Marie Colvin, left, and one of French photographer Remi Ochlik. The two journalists were killed Wednesday, Feb. 22, 2012 by Syrian government shelling of the opposition stronghold of Homs, France's government said. (AP Photo)

  • Rosemarie Colvin, mother of journalist Marie Colvin, poses with her daughter's photograph Wednesday, Feb. 22, 2012, at her home in East Norwich, N.Y. Marie Colvin was killed in the Syrian city of Homs while working as a war correspondent for the Sunday Times. The portrait was taken in 2007 by photographer Bryan Adams. (AP Photo/Kathy Kmonicek)

  • FILE - In this file photo dated March 11, 2008 journalist Marie Colvin is seen in London. A French government spokeswoman on Wednesday Feb. 22, 2012 identified two Western reporters killed in Syria as American war reporter Marie Colvin and French photojournalist Remi Ochlik. Colvin, from Oyster Bay, New York, had been a foreign correspondent for Britain's Sunday Times for two decades, reporting from the world's most dangerous places. She lost the sight in one eye in Sri Lanka in 2001 but did not let that deter her. (AP Photo/PA, Joel Ryan, File) UNITED KINGDOM OUT NO SALES NO ARCHIVE

  • Marie Colvin

    FILE - In this file photo dated Nov. 10, 2010 the Duchess of Cornwall speaks with journalist Marie Colvin, right, in London. A French government spokeswoman on Wednesday Feb. 22, 2012 identified two Western reporters killed in Syria as American war reporter Marie Colvin and French photojournalist Remi Ochlik. Colvin, from Oyster Bay, New York, had been a foreign correspondent for Britain's Sunday Times for two decades, reporting from the world's most dangerous places. She lost the sight in one eye in Sri Lanka in 2001 but did not let that deter her. (AP Photo/Arthur Edwards, pool, file)

  • Marie Colvin

    FILE - In this Tuesday, April 17, 2001 file photo Sri Lankan army medical staff examine journalist Marie Colvin at a field hospital in Vavuniya, 210 kilometers (131 miles) northeast of Colombo, Sri Lanka . Colvin, an award winning American journalist working for Britain's Sunday Times newspaper was caught in the skirmish between Sri Lankan government troops and Tamil Tiger rebels near the northern town of Vavuniya . Respected American war reporter Marie Colvin, who covered conflicts from Sri Lanka to Syria and stood up for the importance of independent journalism, died in a shelling attack in Syria on Wednesday Feb. 22, 2012. She was in her 50s. . (AP Photo/Government Information Department, File)

  • This is an undated image made available Wednesday Feb. 22, 2012 by the Sunday Times in London of Sunday Times journalist Marie Colvin photographed in Tahrir square in Cairo. The French government spokeswoman on Wednesday identified two Western reporters killed in Syria as American war reporter Marie Colvin and French photojournalist Remi Ochlik . Colvin, from Oyster Bay, New York, had been a foreign correspondent for Britain's Sunday Times for two decades, reporting from the world's most dangerous places. She lost the sight in one eye in Sri Lanka in 2001 but did not let that deter her.(AP Photo/Ivor Prickett Sunday Times)

  • A choir performs a hymn during the memorial service for Marie Colvin, the Sunday Times war correspondent who was killed in Homs, Syria on Feb. 22, at St Martin-in-the-Fields church in central London, Wednesday, May 16, 2012. (AP Photo/Lefteris Pitarakis)

  • People attend a memorial service for Marie Colvin, the Sunday Times war correspondent who was killed in Homs, Syria on Feb. 22, at St Martin-in-the-Fields church in central London, Wednesday, May 16, 2012. (AP Photo/Lefteris Pitarakis)

  • Marie Colvin, Rupert Murdoch

    Rupert Murdoch, chairman and CEO of News Corp., leaves after attending the funeral service for journalist Marie Colvin, Monday, March 12, 2012 at St. Dominic Roman Catholic Church in Oyster Bay, N.Y. The 56-year-old Colvin was a longtime reporter for Britain's Sunday Times. She and French photographer Remi Ochlik were killed Feb. 22 in shelling in Homs, Syria. (AP Photo/Mark Lennihan)

  • Marie Colvin, Rosemarie Colvin, Liam Colvin

    Rosemarie Colvin, second from right, mother of journalist Marie Colvin, watches as her daughter's casket, is taken from St. Dominic Roman Catholic Church after her funeral in Oyster Bay, N.Y. Monday, March 12, 2012. The 56-year-old Colvin was a longtime reporter for Britain's Sunday Times. She and French photographer Remi Ochlik were killed Feb. 22 in shelling in Homs, Syria. Liam Colvin, Marie Colvin's nephew, is second from left. (AP Photo/Mark Lennihan)