One of them mentioned by Arthur Conan Doyle was Private Jacotine of the CLI and who continued to fight for 20 minutes before he was killed .
The CLI was the last man left alive in his unit at the Battle of Lys .
One of them mentioned by Arthur Conan Doyle was Private Jacotine of the CLI , who was the last man left alive in his unit at the Battle of Lys , and who continued to fight for 20 minutes before he was killed .