Is last kiss by pearl jam based on a true story?

The song is about a man who says goodbye to his lover before he goes off to war. He promises her that he'll come back, and she believes him. But he doesn't come back. He is killed in action. The song is about the woman reflecting on the last kiss she shared with her lover.

As for whether the song is based on a true story, it is believed to have been inspired by a tragic incident involving two lovers. However, the exact identities of these individuals have not been publicly confirmed, hence leaving the story's authenticity uncertain.