The weather has made a large different in certain wars such as the American Revolution and in several US presidential elections which were decided closely and were affected by turnout in certain areas being up or down.
How has the weather affected the Ukrainian war and helped them to survive, if it has?
How did the weather affect the Korean war?
Oh, there is one clip up on youtube alleging that the one and only way for Hitler to have won WWII, assuming approximately the same decision making on all sides, is for Germany to have had good weather for air power during the evacuation of Dunkirk and to have destroyed the ships taking men out and then to have had taken 240K prisoners of war from UK, forcing a peace deal by Greenwood of the UK war cabinet choosing to go with Halifax in seeking peace, in part for the return of the captive soldiers!
Ukraine has everything from bitter cold to moderate winter weather and it plays a huge factor in the war. The spring and fall is the mud season and unless you are on well maintained roads going cross country is out of the question until the ground firms up otherwise your vehicle/equipment/armour becomes target practise for the enemy after it bogs down in the mud. Infantry fare no better slogging through sometimes waist deep mud.
In the winter temperatures can drop to as low as -40c and deep snow means nobody is moving except in the towns and villages.
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In Korea the weather played a major factor as The Korean Peninsula goes from tropical in the south to temperate in the middle to bitterly cold in the north. Add in the fact much of Korea is in mountainous and hilly areas meant that you were literally fighting hill to hill. The rainy season turned roads impassable and created mud everywhere, the humid climate sapped the energy of the soldiers and add the hills and mountains you get men that literally would collapse from exhaustion in the hot and humid weather. In the middle to the north snow and extreme cold played havoc on men and equipment with temperatures dropping well below -20c and in the mountainous terrain of the north heavy snowfalls made travel difficult if not impossible.
Well…in Ukraine we have been “lucky” to have Putin attack right before the spring rains, thus virtually ristricting his forces to the roads, where they created traffic jams and quickly became targets for artillery and Petro with his trusty quad bike and Javelin.
Not sure I would put that on the weather though…takes a special kind of arrogant genius to ignore the rain season.