Three points about the ending

Firstly, I was disappointed by the ending because it disrupted my emotional state where I was ruminating on Mr Badii's fate.

But on further thought, putting words in the director's mouth:

1. This is the post-modern way of saying "The End". "This was a film, and don't worry about Mr Badii, he is hale and hearty, think of your own life."

2. "The world is more beautiful, and green than what I have shown you with all the drab shades and dust and depression in this film." (and hence also the almost comically cheerful music)

3. "The taste of cherry wasn't just a narrative device. Look at the soldiers, they are not required by the film to do so, but they are enjoying the beauty of nature. It isn't all fiction."