This three-month-long conflict resulted in the  Soviet Union being expelled from the League of Nations and gaining territory near Leningrad.
One side in this war isolated and encircled enemy forces into pockets called motti [MOH-tee]   at the Battle of Raate [RAH-tay] Road, and then stopped the enemy's advance towards the  city of Oulo [OH-ooh-loh] at the Battle of Suomussalmi [SWOH-moos-AHL-mee]. After Semyon   Timoshenko took command of the invading side in this war, it breached the Mannerheim Line. Simo  Hayha [SEE-moh HAA-ooh-HAA] recorded 505 sniper kills and was nicknamed the "White Death" in  this war that introduced the term "Molotov cocktail". This three-month-long conflict resulted in the  Soviet Union being expelled from the League of Nations and gaining territory near Leningrad. Name  this offensive against Finland during World War II that took place during its namesake season.
One side in this war isolated and encircled enemy forces into pockets called motti [MOH-tee]   at the Battle of Raate [RAH-tay] Road, and then stopped the enemy's advance towards the  city of Oulo [OH-ooh-loh] at the Battle of Suomussalmi [SWOH-moos-AHL-mee].
{Winter} War [or talvisota; or vinterkriget; or Zimnyaya voyna; prompt on Russo-Finnish War; prompt on World War II before it is mentioned]