History

Key Decisions of WWII

Key Decisions Of Wwii is a structured history dataset with 16 entries. Its fields include Decision, Year, Decision Maker. Community voting appears as a separate signal beside eligible rows and does not replace the source values.

Every row is shown below and is also available as CSV, JSON, or Excel.

16rows
6columns
59views
0downloads
Updated:4/9/2026

Dataset details

Table scope
All 16 rows
Fields
6 columns
Data updated
Apr 9, 2026

Included fields: Decision, Year, Decision Maker, Country, Theater, and 1 more.

The table contains every record in this dataset; the same records are available in each download format.

Preview observations

Year span
1939 to 1945
Across 16 preview rows
Decision Maker groups
12 distinct values
Across 16 preview rows

Useful for

  • Comparing Decision, Year, and Decision Maker across history entries
  • Building reference tables, charts, or analyses from 16 downloadable records
16/16
Decision
Year
Decision Maker
Country
Theater
Outcome
Invasion of Poland
1939Adolf HitlerGermanyEuropeTriggered outbreak of World War II
Dunkirk evacuation
1940Winston ChurchillUnited KingdomEuropeSaved 338,000 Allied troops from capture
Battle of Britain air defense
1940Hugh DowdingUnited KingdomEuropeFirst major defeat for Luftwaffe, invasion postponed
Operation Barbarossa
1941Adolf HitlerGermanyEastern FrontLargest invasion in history, eventually failed
Attack on Pearl Harbor
1941Hideki Tojo / Isoroku YamamotoJapanPacificBrought United States into the war
Declaration of war on United States
1941Adolf HitlerGermanyGlobalLinked European and Pacific wars
Wannsee Conference and Final Solution
1942Reinhard HeydrichGermanyEuropeFormalized genocide of European Jews
Battle of Midway trap
1942Chester NimitzUnited StatesPacificFour Japanese carriers sunk, turning point in Pacific
Defense of Stalingrad
1942Joseph StalinSoviet UnionEastern FrontGerman 6th Army destroyed, eastern turning point
Operation Overlord (D-Day)
1944Dwight D. EisenhowerUnited States / AlliesEuropeOpened Western Front in France
Operation Bagration
1944Joseph Stalin / StavkaSoviet UnionEastern FrontDestroyed German Army Group Center
Battle of Leyte Gulf
1944Douglas MacArthurUnited StatesPacificLargest naval battle in history, Japan's navy crippled
Yalta Conference agreements
1945Roosevelt, Churchill, StalinAlliesGlobalShaped postwar Europe and Cold War borders
Atomic bombing of Hiroshima
1945Harry S. TrumanUnited StatesPacificFirst nuclear weapon used in war
Atomic bombing of Nagasaki
1945Harry S. TrumanUnited StatesPacificSecond nuclear strike, Japan surrendered days later
Soviet declaration of war on Japan
1945Joseph StalinSoviet UnionPacificManchuria invaded, pressured Japanese surrender

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