Free Download Roy Conyers Nesbit – Ultra Versus U-Boats: Enigma Decrypts in the National Archives
Pen & Sword | 2008 | ISBN: 1844158748 | English | 264 pages | PDF | 124.56 MB
Keeping the Atlantic sea-lanes open was a vital factor in the fight against Nazi Germany. In the battle to protect merchant shipping from the menace of surface raiders and U-boats, Allied resolve and resources were tested to the utmost.