Music in the Midst of Desolation

Old soldiers never die -- they get whisked straight back to earth to take part in angelic "manoeuvres". Patrick Evans has no idea why he and Billy Byrne, who fought their wars a century apart, have been chosen for this particular "op", nor why it seems to involve fixing up the man Billy left behind with someone Billy's always hated. When Patrick realizes his old lover also has a connection to the case, will the temptation to refuse orders become too great?