4 military disguises that were just crazy enough to actually work

1. That time French soldiers hid inside papier-mâché horse carcasses

Looking back, trench warfare has to be one of the most insane methods of warfare ever carried out. Between the torrential mud, staggering levels of trench foot, and other diseases that ran rampant, it's a wonder that everyone didn't just give up and get the hell out of the ground.

But World War I was still, in some respects, a gentleman's war. And gentlemen don't let mud get them down. Gentlemen also don't complain about their lack of protective cover — at least not if you're France. While other platoons were bemoaning the crumbling, barren landscape that made up infamous "No Man's Land" — a stretch of charred earth, tangled barbed wire and broken bodies between opposing trenches — a few French soldiers set up camp right in the middle of it.

They weren't alone, though. They were using a very special kind of shelter ... the hooved kind. Don't worry, no one was actually crawling inside of dead horse bodies to hide from enemy artillery fire. Though a dead horse is what started this whole thing.

Horses were a huge part of combat in WWI. They pulled ambulances, carried soldiers into cavalry charges, and were the primary means of transporting weapons, ammunition and food supplies for each nation involved. They were also large, bulky and loud, making them primary targets for enemy scopes.

This, as you can imagine, left a lot of dead horses everywhere. Eventually, someone searching for shelter in No Man's Land probably cuddled up next to one in what he thought were his final moments, only to realize that this decaying Seabiscuit actually made for a pretty awesome barrier.

Enter France's big idea: hollow, papier-mâché horses large enough for a man to crawl inside and aim his gun through.

Once night fell, the French drug away the dead horses that lay right in front of the German trenches and replaced them with the dummies. Then they ran a telephone wire from inside the horse back to the French trenches, so the sniper who would hide inside the horse would be able to report back on German movements.

This worked for a few days. Then a German soldier spotted a French sniper climbing out of one of the dead horses, and the jig was up. The method quickly became popular though, and "dummy horses" would appear on battlefields throughout Europe for the duration of the war.

2. The sailors who cross-dressed and pretended their warship was a cruise liner

World War II had its share of out-of-the-box camouflage as well. While a Dutch warship was busy disguising itself as an island to hide from Japanese bombers, the British fleet was brainstorming its own method of deception.

German U-boats were becoming more and more of a problem for the Allied merchant fleet. With little means of fighting back, the small ships were sitting ducks for the German watercraft, who could pluck them off easily with their superior weapons and speed. This gave England an idea: if the King's warships disguised themselves as merchant boats, they could lure them into an ambush, destroying the German U-boats and the submarines that surfaced alongside them during their attacks.

But England wasn't about to do this deception halfway. If they were going to pull this off, their disguise would have to be elaborate, reflective of the other (hijinks) they had pulled off earlier in the war. So the sailors got creative, and boy did they deliver.

Not only did the British officers don civilian costumes, some dressed in drag, pretending to be ladies sunning themselves on the deck of a cruise liner. When the Germans looked through their periscopes to take in the ship, they would see men and "women" flirting aboard a civilian ocean liner, walking around the deck and taking in the views over the rail.

They would also have to act the part. When a German U-boat was spotted, some ships went as far as pretending to panic, running around the deck and tripping over themselves for the benefit of the German's view. There are even accounts of sailors haphazardly deploying their lifeboats and "accidentally" leaving one of their own behind, then scrambling to retrieve them as the unlucky "civilian" screamed for help.

The ship, of course, was actually outfitted with plenty of hidden weapons. When the U-boats would close in, the ruse would be over, and they would destroy the enemy ships and submarines as they began to close in.

3. The German soldier who hid inside of a fake tree

Man-sized horse piñatas weren't the only thing soldiers were hiding inside of during WWI. In 1917, a platoon of German soldiers in Belgium needed to find a way to gain visibility through a small patch of dead trees that blocked their view of the Allies on the other side.

The cluster of dry wood was optimistically named the Oosttaverne Wood, one of the last clumps of nature left in the battlegrounds near Messines. It actually looked like a bunch post-apacolyptic metal posts, which gave the Germans an idea. They couldn't send a sniper in to hide amongst the trees because there weren't enough branches to cover him, but they could send them inside their own tree.

A plan was set into motion. The Germans would build a 25-foot-tall tree out of steel pipe, painting it so it looked like it had bark. Then a solider would hide inside, using a small hidden window to spy on the British forces in what was probably one of the most cramped snipers' nests ever.

Just like the French horse-creators did, the Germans waited until nightfall to get things moving. With artillery fire ringing out to disguise the sounds of sawing and chopping wood, they cut down the real tree and set up their new steel lookout, hoping it wouldn't draw any unwanted attention.

It didn't. For several months the Germans were able to spy from their wartime treehouse, with the tree-spy crawling out of his post under cover of darkness each evening to report on his findings. It wasn't until the British tunneled under the German lines and destroyed their trenches from the ground up in the Battle of Messines  that the tree was abandoned. Once they had captured the trenches, the British lived and worked alongside the fake tree for several months before discovering it was a fake. The steel tree can now be found in The Australian War Memorial.

4. Israeli special forces used fake boobs to trick the PLO

Thus far, all of our disguise contenders have been relatively believable. When you have shells exploding next to your trench and artillery fire screaming in your ears, you're probably not going to spend much time debating the validity of a slightly iron-looking tree, or a particularly limp dead horse. No one has time for that kind of daydream. And even though the cross-dressing sailors were doubly ridiculous, they had the advantage of distance from enemy scopes.

This story, however, is just plain insane. In 1973, a group of Israeli special forces commandos entered Beirut on a mission to take out three key leaders of the [Palestine Liberation Organization] who were responsible for the Munich massacre of the 1972 Olympics. The mission, dubbed "The Spring of Youth," was incredibly risky, and the operatives knew that some deception would be in order if they were to get in and out of the area safely.

So, the Israeli commandos did the logical thing — they dressed up as women. Besides being confident in their ability to infiltrate the PLO, they were also apparently confident that their enemies had never seen a woman before. Or that they could really rock a pair of heels, who knows.

With wigs, fake boobs and matching shoes all in place, the muscled members of the Israeli special forces strolled down the street on the arms of other members of their secret group, who were normally-dressed men.

The fake couples were able to pass right by bodyguards and police without inciting any suspicions, and the hidden team was able to walk up to the apartment building of the PLO leaders and wait right outside their doors. Once safely inside, the men and "women" burst through the doors and pulled out their hidden guns and explosives, shooting and killing the stunned PLO members and avenging the deaths of their murdered countrymen.

The story gets even crazier from here. One of the femme fatales who carried out the high stakes mission was Ehud Barak, who would eventually serve as Prime Minister of Israel and currently serves as Defense Minister. Just goes to show you that dressing in drag could help you make it to the top.