Robert E. Howard knew of the battle and commented on it to Lovecraft:
'Another thing - I have no patience with writers, historical or fictional, who glorify Oriental [ie, non-Western] monarchs, comparing them with western rulers, to the discredit of the later; who decry the outrages committed by the westerners on the Orientals, and then gloss over the atrocities of the latter, holding up some western outrage as some excuse. Westerners have suffered a hell of a lot more outrages at the hands of the Orientals than vice versa. I am utterly unmoved when I read of massacres of Asiatics - especially Muhammadans - by Christians. They started it, blast their hides - back in the days of Peter the Hermit, when the Seljuks took Palestine and started maltreating pilgrims to Jerusalem. And before that, in the days of Muhammad, and of the Caliphs - and of the Moors in Spain. Not a blow struck against Islam but we owed it to them.
Even Stanley Lane-Poole deplores the action of Milosh Kabilovitch, who struck down Murad in the hour of victory at Kossovo - he looks on it as a traitorous murder, apparently. Bah! Who ever heard of such infernal drivel. Which was worse - Milosh, who approached the Turk smiling, and suddenly drove the dagger in his guts, or Murad, who had just butchered a nation, and dragged thousands of innocent men, women and children into slavery? I have intense admiration for Milosh - and for Ehud the Benjamite who stabbed Eglon the Moabitish tyrant - and for William Tell, whether real or legendary.'
-- Robert E. Howard in a letter to HP Lovecraft
One legacy of the battle was the Serbian tale of the "Kosovo Maiden":
The river of time in its current Bears away all the affairs of men, And drowns nations, kingdoms, and kings In the abyss of oblivion. And if, through the sounds of the lyre and the trumpet, Anything shall remain, It shall be devoured in the jaws of eternity And shall not escape the common fate.