When printing make sure they fit on the page, then simply cut them out and glue the tabs in place.
http://network.wwpd.net/pdf/normandy_buildings-01.jpg
http://network.wwpd.net/pdf/normandy_buildings-02.jpg
http://network.wwpd.net/pdf/normandy_buildings-03.jpg
http://network.wwpd.net/pdf/normandy_buildings-04.jpg
http://network.wwpd.net/pdf/bunker01.jpg
There is also some fantastic paper terrain (and landing craft) available here:
http://www.paperterrain.com/