Lyric discussion by windycityguy 

As MHHD2 mentioned, this song is a cover of Kim Wilde's fantastic 1981 version. The song is (quite literally) about a soldier who is called to conduct bombing raids on Cambodia from an Air Force base in Thailand. When he returned, he was haunted by his actions. The truth of his deeds were lost in Cambodia...

That makes sense, but what to make of "She won't see his face again?"

"She won't see his face again." Most likely it means that she won't ever see the real him again, because he could never be the same. Or so I believe.

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