1918 DAY BY DAY: WORLD WAR I COLLECTION by Ruben Ygua
English | August 13, 2019 | ISBN: 1686147805 | 52 pages | EPUB | 0.27 Mb
1st- In 1917 the losses of allied ships amounted to more than 6 million tons throughout the year.

However, the losses had fallen to around 300,000 tons and would never return to the levels of the spring of 1917; it was then when the allied losses came out of critical levels, instead the losses of U-Boote increased alarmingly and only in the last three months of 1917 were lost 61 submarines, almost half of the submarine fleet...