The Mannerheim Line 1920-1939

IN THE WAKE OF THE BLOODY CIVIL WAR THAT FOLLOWED FINLAND`S INDEPENDENCE FROM RUSSIA IN 1917, THE BORDER BETWEEN THE TWO COUNTRIES WAS ESTABLISHED ACROSS THE KARELIAN ISTHMUS, AN AREA LONG FOUGHT OVER BY RUSSIA, FINLAND, AND SWEDEN IN THEIR ATTEMPTS TO DOMINATE THE NORTHERN TIP OF EUROPE.