Bridgehead
Bridgeheads typically exist for only a few days , the invading forces either being thrown back or expanding the bridgehead to create a secure defensive lodgement area , before breaking out into enemy territory , such as when the U . S . 9th Armored Division seized the Ludendorff Bridge at Remagen in 1945 during World War II . 
<triplet> Ludendorff Bridge <subj> Remagen <obj> located in the administrative territorial entity