page_title: Mannerheim Line
hierarchical_section_title: Mannerheim Line
caption_attribution_description: English: Map of the Mannerheim Line, the Finnish main defense line across the Karelian Isthmus in Winter War. Suomi: Karjalankannaksen kartta, johon on merkitty Mannerheim-linja, talvisodan aikainen puolustuslinja
context_page_description: The Mannerheim Line was a defensive fortification line on the Karelian Isthmus built by Finland against the Soviet Union. During the Winter War it became known as the Mannerheim Line, after Field Marshal Baron Carl Gustaf Emil Mannerheim. The line was constructed in two phases: 1920–1924 and 1932–1939. By November 1939, when the Winter War began, the line was by no means complete.
context_section_description: The Mannerheim Line (Finnish: Mannerheim-linja, Swedish: Mannerheimlinjen) was a defensive fortification line on the Karelian Isthmus built by Finland against the Soviet Union. During the Winter War it became known as the Mannerheim Line, after Field Marshal Baron Carl Gustaf Emil Mannerheim. The line was constructed in two phases: 1920–1924 and 1932–1939. By November 1939, when the Winter War began, the line was by no means complete.
caption: The Mannerheim Line from the Gulf of Finland to Lake Ladoga
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