If anyone knows the history of James Blunt they may listen to that track with a different understanding. An extract from Wikipedia;
"In 1999, he served as an armoured reconnaissance officer in the NATO deployment in Kosovo. Initially assigned to reconnaissance of the Macedonia-Yugoslavia border, Blunt and his unit worked ahead of the front lines directing forces and targeting Serb positions for the NATO bombing campaign. He led the first battalion of troops to enter Pristina, and was the first British officer to enter the Kosovo capital. His unit was given the assignment of securing the Pristina International Airport in advance of the 30,000-strong peacekeeping force; the Russian army had moved in and taken control of the airport before his unit's arrival. As the first officer on the scene, Blunt shared a part in the difficult task of addressing the potentially violent international incident. There were less intense moments during Blunt's Kosovo assignment, however. Blunt had brought along his guitar, strapped to the outside of his tank. At some places, the peacekeepers would share a meal with hospitable locals, and Blunt would perform. It was while on duty there that he wrote the song "No Bravery"."
His early songs often suggest reflections about his military service, and the first verse of this track appears to do the same with religious killings, etc.
It may work, depending on the person you are thinking off.
And about your, "I want to stay young forever"... Good luck with that too,
I tried, and failed miserably.