Top: Original WW1 ship models painted to test dazzle camouflage ... It made the crew on these spectacular ships feel safer from attack. The US Navy continued to use dazzle into World War Two ...

When war broke out these colonial outposts would make important bases for Germany's navy and global communication ... up between Britain and France. WW1: How did an artist help Britain fight ...

Read more: Weapons That Are Too Dangerous For War The Imperial German Navy's U-boats were some of the deadliest vessels of the war, and they were responsible for sinking over 5,000 Allied ships.