I saw the play and the movie. Cried through both, despite the outcome.
The horrors of war continue to this moment.
The BEST ever "allegory" that I saw was an original Star Trek episode, where war was "sanitized" by giving everyone a number and when your number was called, you left what you were doing and just "disappeared" (were killed humanely)
That way, there was no injury, no property destruction. In some ways this is the best way to "go" but ........