
Kathleen T. answered 07/08/19
English, Research/Writing, History Tutor with Homeschooling Experience
I found this question discussed on several websites. After much reading, I believe it is impossible to answer with certainty. The question directly beneath it on this site qualifies "battle" as "large scale...more than 1000 combatants," with "only one person" surviving (no indication of whether from one side or in total). None of this information changes my stated belief.
You might enjoy relevant material found on Q&A sites for history buffs. Regarding battles with reputed lone survivors, I saw none get unanimous agreement from the participants.