A game of birds and wolves : the secret game that won the war

A history of the Western Approaches Tactical Unit, a research department the British Navy established during World War 2 and tasked with devising new tactics to counter the German submarine threat to Atlantic shipping. 'splendid... A Triumph' John Lewis Stempel, Sunday Express 'compelling' Sunday Times 'history Writing At Its Best' Booklist (starred Review) 1941. The Battle Of The Atlantic Is A Disaster. Thousands Of Supply Ships Ferrying Vital Food And Fuel From North America To Britain Are Being Torpedoed By German U-boats. Prime Minister Winston Churchill Is Concealing From The Country The Number Of British Ships Sunk. He Is Concealing The Number Of British Men Killed. And Worst Of All, Unless Something Changes, He Knows That Britain Is Weeks Away From Being Starved Into Surrender To The Nazis. This Is The Story Of The Game Of Battleships That Won The Second World War. In The First Week Of 1942 A Group Of Unlikely Heroes - A Retired Naval Captain And A Clutch Of Brilliant Young Women, The Youngest Only Seventeen Years Old - Gather To Form A Secret Strategy Unit. On The Top Floor Of A Bomb-bruised Hq In Liverpool, The Western Approaches Tactical Unit Spends Days And Nights Designing And Playing Wargames In An Effort To Crack The U-boat Tactics. A Game Of Birds And Wolves Takes Us From The Sweltering Fug Of A U-boat As The German Aces Coordinate Their Wolfpack, To The Tense Atmosphere Of The Operation Room As The British Team Plot Battles At Sea On The Map. The Story Of Operation Raspberry And Its Unsung Heroines Has Never Been Told Before. Investigative Journalist Simon Parkin Brings These Hidden Figures Into The Light And Shows The Ingenuity, Perseverance And Love Needed To Defeat The Nazis In This Gripping Tale Of War At Sea. Soon to be a major motion picture! It's 1941. Imagine you're Winston Churchill. The Battle of the Atlantic is a disaster. Supply ships ferrying vital weapons, food and fuel from North America are being torpedoed by the German U-boats. You are lying to the country about the number of ships sunk. You are lying about the number of men killed. Without the supply ships Britain will starve. The tide of the war is turning in Germany's favour. This is the story of the game of battleships that won the Second World War. In 1941 Prime Minster Winston Churchill gathered a group of unlikely heroes - a retired naval captain and eight brilliant young women, the youngest only seventeen years-old - to form a secret strategy unit. On the top floor of a ramshackle HQ in Liverpool, the Western Approaches Tactical Unit spent day and night playing war games to crack the U-boat tactics