Law enforcement Track down labyrinth of tunnels connecting tents to generator in Hamilton encampment Hamilton law enforcement say which they found out a number of 'guy-built holes and tunnels' throughout a patrol of a downtown encampment before this 7 days.Britain was also worried about Germany's developing military energy. Germany was producing it

U-155 dipamerkan dekat Tower Bridge di London setelah Perang Dunia Pertama. Ancaman kapal-U berkurang pada tahun 1917, ketika kapal-kapal dagang mulai berlayar dalam bentuk konvoi dan dikawal kapal penghancur. Taktik ini terbukti sulit bagi kapal-U untuk mencari goal, sehingga mengurangi kerugian; setelah hidropon dan ranjau bawah air diperkenalkan