In this article, an anonymous Doughboy tells the tale of his return to the old trench lines in order to conduct tours of the AEF battlefields for the morbidly curious.
"But anyone who has been a battlefield guide can tell you that the people are not sick of the war - not by a long way. Museums, cathedrals, art galleries, all the stock sights of Europe, are cheerfully passed by in order to get the chance to pick one's way among the broken stones that litter the streets of Dun-sur-Meuse or gaze in awe at those piles of white, powder-like over which American engineers once put the road sign: 'This was Fismes'"
Another article on trench tours of the Twenties can be read here
And another can be read here...