Use situational irony in a sentence?

The short story 'The Sniper' by Dylan Greenwood. This story talks about an IRA(Irish Republican Army) during the Irish Civil War. He basically lights a cigarette, even though the light of the burning cigar may lead him into trouble, and maybe loosing his life if the opposing side, the Free State saw where the light was coming from and they would probably shoot at him. He still lit the cigar and he goes on an adventure as a Free State sniper shoots at him. He devises a incredible plan into tricking the Free State Sniper and the Free State Sniper fell for it. The man who originally lit the cigar was able to kill the other sniper, but in the end he felt so bad and messed up. He wondered how he can just kill someone like this, and out of curiOSity he turned the sniper he killed over, took off his mask to see that it was his own brother. My retelling of the story is quite confusing, but you can read this to get a grip of it.

http://en.wikipedia.org/wiki/The_Sniper_%28story%29