| Invasion of PolandInvasion of Poland | Eastern Front | | | |
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| Winter WarWinter War | Scandinavia | | | |
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| Operation WeserübungUnternehmen Weserübung | Scandinavia | | | |
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| German invasion of the NetherlandsGerman invasion of the Netherlands | Western Europe | | | |
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| Battle of FranceBattle of France | Western Europe | | | |
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| Second Sino-Japanese WarSecond Sino-Japanese War | China | | | |
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| Japanese coup d'état in French IndochinaJapanese coup d'état in French Indochina | Southeast Asia | | | |
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| Operation MercuryUnternehmen Merkur | Balkans | May 1941 | May 1941 | |
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| Second Battle of KharkovSecond Battle of Kharkov | Eastern Front | | | |
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| Battle of MoscowBattle of Moscow | Eastern Front | 30 Sep 1941 | 20 Apr 1942 | |
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| Operation TyphoonUnternehmen Taifun | Eastern Front | | | Battle of Moscow |
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| Defense of MoscowDefense of Moscow | Eastern Front | 30 Sep 1941 | 5 Dec 1941 | Battle of Moscow |
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| Oryol–Bryansk Defensive OperationOryol–Bryansk Defensive Operation | Eastern Front | 30 Sep 1941 | 23 Oct 1941 | Defense of Moscow |
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| Vyazma Defensive OperationVyazma Defensive Operation | Eastern Front | | | Defense of Moscow |
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| Mozhaysk–Maloyaroslavets Defensive OperationMozhaysk–Maloyaroslavets Defensive Operation | Eastern Front | | | Defense of Moscow |
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| Kalinin Defensive OperationKalinin Defensive Operation | Eastern Front | | | Defense of Moscow |
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| Tula Defensive OperationTula Defensive Operation | Eastern Front | | | Defense of Moscow |
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| Klin–Solnechnogorsk Defensive OperationKlin–Solnechnogorsk Defensive Operation | Eastern Front | | | Defense of Moscow |
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| Naro-Fominsk Defensive OperationNaro-Fominsk Defensive Operation | Eastern Front | | | Defense of Moscow |
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| Moscow Strategic Offensive OperationMoscow Strategic Offensive Operation | Eastern Front | 5 Dec 1941 | 7 Jan 1942 | Battle of Moscow |
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| Soviet Winter Offensive 1942Soviet Winter Offensive 1942 | Eastern Front | 7 Jan 1942 | 20 Apr 1942 | Battle of Moscow |
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| Rzhev–Vyazma Strategic OperationRzhev–Vyazma Strategic Operation | Eastern Front | | | Soviet Winter Offensive 1942 |
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| Toropets–Kholm Offensive OperationToropets–Kholm Offensive Operation | Eastern Front | | | Soviet Winter Offensive 1942 |
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