During the last week in May, we (three adults) had hoped to travel by train from Paris (we will be in Paris 1 week) to Ypres to view the First World War battlefields for three days and then continue on to Amsterdam by train. After looking at various websites, I am still not clear exactly how to do this. Can anyone please help us get from Paris to Ypres and then from Ypres to Amsterdam using public transportation? Must we rent a car? Thanks for helping us out.