Sometimes nature has had enough of killing us and has just intervened. Throughout history, armies and naval forces have met in battle, only to fight storms and hurricanes instead.
Nature may separate the warring parties and force one or both to retreat. At other times there is the decisive blow, causing a devastating defeat for one army or navy and favors the other. Or it just prevents the larger force from decimating the smaller or less favored force.
10 Typhoons thwarted the Mongol attempt to invade Japan
In 1274, a Mongol fleet of 500-900 ships with 30,000-40,000 soldiers left China to attack and capture Japan. The ships anchored in Hakata Bay, Japan, until they were destroyed by a typhoon. One third of the fleet sank. About 13,000 soldiers drowned and forced the survivors to retreat to China.
The undying Mongols returned in 1281 with 4,400 ships and 140,000 soldiers. This was far more than the 40,000 samurai and soldiers of Japan. The weather fought again on Japan's side as another typhoon destroyed the invading fleet shortly before its attack on 15 August.
Half of the Mongols died, and nearly all ships were destroyed. Only a few returned to China. The samurai also hunted and killed survivors. The Japanese were so impressed by the typhoon of 1281 that they formed the word kamikaze ("divine wind") to refer to a typhoon. They believed that the typhoons were sent by the gods. 
9 Slid Underwater island claimed by India and Bangladesh
New Moore Island was a small, uninhabited piece of land between India and Bangladesh. It was only 3.5 kilometers long, 3 kilometers wide and just under 2 feet from the water. The island was first discovered in 1974. However, some experts stated that it has existed for 50 years.
India and Bangladesh claimed the island after their discovery. In 1981, India even sent some ships and personnel from the Border Guard to hoist a flag on the island. Things began to change in 1987 when satellite imagery showed that the island was slowly sinking. It was over by 2010. 
8 A storm ended France's invasion of Ireland
1796 was a turbulent year for British and French relations. Britain financed some angry aristocrats and rebels against the French crown. At the same time, Britain subsidized several allied nations in a war against France.
This caused the French to plunder revenge. Instead of invading Britain directly, France joined with the Irish patriots who fought for independence from Great Britain. The idea was to help the Irish patriots defeat Britain. At some point, Ireland would have become a French ally and kept Britain at bay.
On December 15, 1796, a French force of 15,000 soldiers left France on several ships. Halfway the fleet got into trouble after being split by a terrible storm. Some made it to Bantry Bay, where the fleet wanted to meet before the invasion. However, the attack was stopped because several ships – including the Fraternite General Hoche, the commander of the operation – wore, were still missing.
The fleet left days later, worried about the weather getting worse and the British could attack. General Hoche finally arrived with his ship. He was informed, however, that the French fleet had already arrived and then departed. He also left for France and ended the invasion.
Interestingly, an attempt by the Republic of Batavia to invade Britain the following year was also affected by bad weather. The attack was halted when a storm prevented the fleet from leaving the harbor. 
7 The 1709 Winter of Russia ended Sweden's era as a superpower
When military strategists were asked for advice on the invasion of Russia, an invasion just before winter would be avoided. Otherwise you should get out better before winter sets in. Several military commanders such as Adolf Hitler and Napoleon Bonaparte found the hard way after being defeated by the harsh Russian winter.
No one remembers a third country that tried this – Sweden. In 1708, 40,000 Swedish soldiers invaded Russia during the Great Northern War of 1700-1721. At that time, the smaller but more professional Swedish army was known to defeat larger opponents in combat. After the defeat, the Russians fled deep into Russia and burned down their villages.
This is called scorched earth. This tactic is used by Russia to ensure that the enemy can not remain behind what is left. At the same time, some Russian units raided the Swedish supply units, so that the Swedes did not have enough supplies. Soon the Great Frost of 1709 set in. It was the coldest winter in Europe for 500 years.
Lacking basic supplies, the Swedish troops froze. About 2,000 died in one night, and half was dead when winter was over. The demoralized survivors tried to destroy Russia in the summer, but they were no match for the 80,000 Russian soldiers. In the end, only 543 Swedish soldiers survived. 
6 A devastating storm destroyed the Spanish Armada trying to invade Britain
In 1588, King Philip II of Spain ruled that he had enough of the Protestant Queen Elizabeth and ruled around her with a Roman Catholic to replace. So he ordered 130 ships to sail to Flanders to pick up 30,000 troops for the invasion.
The British got wind of the operation and intercepted the Spaniards off the coast of Plymouth. Both fleets led several battles, all ended in a stalemate. The Spaniards were finally defeated when a storm threw their ships from Flanders into the ocean.
With the threat of disease and low supplies, the Spaniards decided to give up the war and return to Spain. The storm further shattered the armada as it retreated, resulting in several ships either sinking or shattering on shore. Only 60 of the 130 ships returned to Spain and 15,000 sailors were killed. 
5 Dust storms ended US attempt to free hostages
On November 4, 1979, Iranian students at the US Embassy in Tehran invaded a 52 diplomats and ambassador taken hostage. President Jimmy Carter later ordered a military operation to free the hostages. The US did not have a central special force at the time, so various units of the military were brought together for the invasion.
The operation was doomed to failure from the start because the units never trained together. Problems began when the C-130 transport planes and RH-53D helicopters encountered sandstorms when they rode to a Rendezvouz point code-named "Desert One". The planes flew through the storm. But the helicopters could not force them to return to the base.
Six out of eight helicopters later returned to Desert One, but one was damaged on landing. The operation was discontinued because five helicopters were not enough to reach their targets. All units were ordered back to base.
Unfortunately, a sandstorm blocked the view of a C-130 aircraft that stood out from Desert One. The plane flew into a helicopter that flew overhead and crashed both of them to the ground. Eight crew members were killed. The remaining troops, helicopters, and planes retreated hastily.
The failure of the operation forced a change in US military doctrine. Individual arms of the military formed orders to coordinate special operations. The US Department of Defense also created the USSOCOM to coordinate operations between all US forces. 
4 Low clouds, rain and thunder prevented Hitler from destroying the Allies in Dunkirk
Allied troops stationed in France were not confronted with Nazi Germany during the 1940 invasion of France. The Allies fled after a series of defeats in the port of Dunkerque. The Germans could have moved in and decimated the Allies, but Hitler ordered them not to do so.
This gave the Allies enough time to begin a retreat from Dunkerque on May 26th. The next day Field Marshal Walter von Brauchitsch convinced Hitler to continue the attack. But when the German tanks arrived, the Allies had built up a stronger defense, and Hitler ordered the tanks to stop and attack elsewhere. By June 4, more than 338,000 British, French and Belgian troops had fled Dunkirk to the UK.
The reason why Hitler prevented his army from decimating the Allies is still unclear. Some believe Hitler expected the capitulation of the British. Others say that Reichsmarschall Hermann Göring, the commander of the Luftwaffe, had assured Hitler that the Luftwaffe could destroy the Allies without the army.
If this is true, the Germans can not attack the Allies because low clouds, rain and thunder prevented the Air Force from carrying out air strikes against Allied targets. The Air Force attacked for two and a half days when the sky was clear, but it was not enough to make a difference. 
3 A storm decimated the French fleet at the Battle of Trafalgar
On October 21, 1805, the British Navy was fighting the combined fleets of Spain and France. The French and Spaniards were defeated in battle, but continued to fight until a hurricane arrived and decimated the remnants of their fleet.
The French ship Fougueux was the first victim of the hurricane. Captured in battle, it was pulled by the British ship Phoebe when the stormy seas snatched the rope. The ship hit some rocks and killed the French and British sailors on board. The French Redoutable was lost the next day under similar circumstances.
More French ships confiscated by the British threatened to sink. French sailors against Algeciras rebelled against their British kidnappers. The British capitulated these rebels because they did not want Algeciras to sink.
Several French ships, led by Captain Cosmao-Jerjulien, tried to fight but were restricted by the fog and the storm. The British also had difficulty controlling their ships and the French ships under their control.
On October 24, the stormy seas forced British admiral Collingwood to order the abolition and destruction of all conquered ships. Fourteen of the captured French and Spanish ships were destroyed. 
2 A French cavalry conquers a Dutch fleet
The 23rd of January 1795 was one of the strangest days in the history of war. A cavalry captured several warships. That should not even be possible because cavalrymen use horses and fight on land while navy uses ships and water.
The ships were captured during the French Revolutionary War at the Battle of Texel. A storm had anchored a Dutch fleet in the street of Marsdiep right next to the Dutch island of Texel. The Dutch waited for the storm to end, but they could not walk because the water on the bank was frozen.
The French heard of the problem of the fleet and sent a cavalry. The Dutch saw the French and considered destroying their ships to prevent the arrest. However, they rejected the idea when they heard that the French revolutionaries had won the war. The Dutch capitulated on the condition that the French allow them to stay on their ships.  
However, reports indicate that the Dutch fleet was not a sitting duck and could have fought back. The Dutch had bigger guns and numbers – a total of 14 ships. The French also needed ladders to climb the ships, but they had none.
1 An unpredictable storm forced the Union to abandon the first Battle of Fort Fisher
The first battle of Fort Fisher was fought on December 23 and 27, 1864, when Union troops were under the command of Major General Benjamin Butler and Rear Admiral David D. Porter attempted to capture Fort Fisher from the Confederates.
At that time, all Confederate ports, except Wilmington, North Carolina, were under the control of the Union. The Port of Wilmington was protected by Fort Fisher. The attack was delayed as heavy storms prevented the fleet from sailing. The Union ships finally sailed on 14 December and reached Fort Fisher on 19 December.
General Butler and his men retired in fear of an impending storm. Admiral Porter launched an attack as the storm subsided on December 23. General Butler and his men returned that evening, but did not attack the fortress, fearing that the Confederates were ready Brewing and Major General Robert Hoke of the Confederation came to defend the fortress. However, the storm did not protect the Confederates for long. A week later, it was captured by a Union force led by Major General Alfred H. Terry.