Simo Häyhä would be the closest approximation I could think of at the moment. He was a sniper for the Finnish army during the Winter War against Russia 1939-1940. During this time, he amassed 505 confirmed kills against the Soviet Army [possibly more due to the fact that kills had to be confirmed by another officer] and became feared as the 'White Death', as he was known to dress in white snow-camouflage.

The man was an especially skilled marksman, using his rifle's iron sights as they did not fog up in the cold air and also allowing him to increase his accuracy. He was shot in the jaw by a Russian soldier after numerous attempts to eliminate him prior (including artillery and counter-snipers), but survived and was promoted to the rank of Second Lieutenant.

Michael Wittmann would probably count as a one man army in terms of Panzer aces. His story is almost certainly overinflated in the propaganda, but he was renowned at the time and definitely is worthy of some credit. He won the Knight's Cross of the Iron Cross with Oak Leaves and Swords which made him one of the most highly decorated German soldiers of the war.

He is credited with single handedly holding up the British 7th Armoured Division at Villers-Bocage and a great deal has been written about this encounter in particular. You can find plenty of information on him and his exploits if you search around a bit.

The key point of contention seems to be whether or not he actually was completely alone during Villers-Bocage or if he was supported at times by part of his company. Either way, he either personally destroyed or led an action in a key role which halted the advance of the British and destroyed more than a company without being killed. It's a pretty impressive tactical feat regardless of the mismatch in firepower.

Personal courage was not the exclusive preserve of Allies of Axis soldiers. Here's a few examples of heroism from Wehrmacht and Waffen SS troops.

In 1940, Waffen SS NCO Ludwig Kepplinger lead an attack on the Ijessel River bridge. Despite heavy fire from Dutch positions, Kepplinger lead two comrades in a hand grenade attack that cleared the way for the SS attack. Kepplinger won an Iron Cross and the Knight's Cross for his action.

In another bridge-related incident in Low Countries during 1940, Feldwebel (Sergeant) Helmut Arpke lead a gliberborne attack on the Albert Canal bridges. In less than ten minutes, Arpke and his pioneer teams knocked out a Belgian MG nest and dismantled the demolition charges on the bridge. In the same action, another German paratrooper, Obergefreiter (Corporal) P. Meier swam across a river under fire, stole a bicycle, linked up with the Germans at Eben-Emael, and then turned back in search of his unit. Although he didn't find his comrade that day, he single-handedly managed to capture 110 Belgian soldiers.

During the same action, Rudolf Witzig won the Iron Cross Second Class, the Iron Cross First Class, and the Knight's Cross all on the same day. Leading another glider attack, this time on the Eben-Emael fortress, Witzig rallied his men and coordinated a bitter fight to clear the Belgian troops entrenched inside the fort.

In July 1942, 19-year-old Gefreiter (Lance Corporal) Gunter Halm was part of a detachment of two anti-tank guns that destroyed nine British tanks and disabled six more at El Alamein. Halm won the Iron Cross and the Knight's Cross in this battle.

Franz Stigler is perhaps best known for his antics involving escorting a damaged American B-17 to safety.

However, in his amazing account of the war detailed in the biographical book of his war experience ( [A Higher Call] ( http://www.amazon.com/gp/aw/d/0425252868?pc_redir=1405330637&robot_redir=1) ) we learn that he was a seemingly invincible German ace fighter pilot. He flew in missions from nearly the beginning of the war to the very end, wherein he finds himself among an elite unit of German aces flying the ME-262 jet fighter.

Stigler was credited with a few HUNDRED kills. Was he the most successful fighter pilot in all of recorded history? No.

That title belongs to another German ace by the name of Erich Hartmann with 352 credited kills.

Both men survived the war and many decades afterwards, dying eventually of old age. They seemed to be absolutely invincible in the skies over Germany.

Yay, this doesn't seem to have been mentioned yet!

Erich Hartmann was a Luftwaffe pilot serving in Jagdgeschwader 52 on the eastern front. He had 352 confirmed kills - that is, he shot down 352 allied aircraft. He is the most successful fighter pilot ever in this regard, nicknamed "The Black Devil" by the Soviets.

He was never shot down, although he had to crash-land 14 times because debris from other planes he destroyed would hit him. This was because he often would wait until the last possible second to open fire on another plane, so as to maintain maximum surprise against the enemy and so the other planes in a formation wouldn't notice him coming. He would usually attack by diving from above.

He was awarded the Knight's Cross of the Iron Cross with Oak Leaves, Swords, and Diamonds. He was only a 20-something year old guy during the war as well, which is incredibly impressive. Not a bad guy at all either.

Oberstleutnant Gunter Viezenz who single-handedly destroyed 21 Enemy tanks with handheld explosives in ww2 (panzerfaust, Satchels/etc). Tell me that isn't a one-man wrecking machine! He was awarded the most Panzervernichtungsabzeichen (Tank Destruction Badges) in the Third Reich.

Surprisingly Wiki has a pic and little blerb about him: http://en.wikipedia.org/wiki/G%C3%BCnther_Viezenz

Check out Hans Ulrich Rudel

He was the only person to be awarded the Knight's Cross of the Iron Cross with GOLDEN Oak Leaves, Swords, and Diamonds and was the highest decorated serviceman of the Axis forces. The only one with higher decorations was Hermann Goering.

The man is responsible for the following:

Flew over 2500 combat missions

Destroyed over 800 vehicles

519 tanks

150 artillery pieces

70 landing craft

9 aircraft

4 trains

a few bridges

and contributed to the destruction of a destroyer, 2 cruisers and a freakin Russian battleship. He was literally Hercules in a cockpit and absolutely loyal to the Nazi party until the end

Really the main reason you hear about these stories relating to the Allies is because they won the war and its easier to glorify such things. The Axis had plenty of the same Rambo style heroes but they lost so the Western media isn't so interested in glorifying Nazis.

For example you can take a look at the recipients of the Tank Destruction Badge http://en.wikipedia.org/wiki/Tank_Destruction_Badge

Just about all of these guys are badasses - this is not just a badge for destroying tanks - its a badge for destroying them with handheld weapons (no AT guns, tanks, planes, etc). These guys generally had to get VERY close and many of them did it over and over again.

You can also take a look at fighter pilots. http://en.wikipedia.org/wiki/List_of_World_War_II_flying_aces

Notice how far down on this list you have to scroll to even find an Allied pilot. Some of these scores are inflated but that is the case with both Axis and Allied sides.

Really the Axis has more "one man army" situations for a few reasons. One of them is that as the war went on they were generally outnumbered - its 'easier' to be Rambo if you are constantly put in desperate situations. It was also the case that the Allies would often take a war hero off the front and put him back home to sell war bonds or train recruits. Oftentimes an Axis soldier was put on the front until he was either killed or the war was over. Thus lots of badass soldiers got more opportunities to continue being badasses.

Heinrich Severloh comes to mind.

Drafted in 1942 he never was a big fan of the Wehrmacht. After various disputes with his superiors he got asthma after a sustained period of physical labour in Russia. After six months in hospitals for recovery he got deployed to France. Still not liking the Prussian military mentality, he did what he had to but at the same time was looking for ways out of the service until he became best friends with his superior Oberleutnant Bernhard Frerking while he served as his attendant. Time went by until the 6.6.1944 came around. Severloh's unit manned Widerstandsnest 62 on Omaha beach. From his position he had a good overlook of the eastern part of the landing zone. During the night he noticed bombs being dropped in the area, but they were too far away to really bother him. The naval bombardment in the morning on the other hand gave his position quit the beating with one shell impacting around 10m from his position. When the landing started he fired his MG42 into the landing infantry while his comrade, which was in WN62 brought more ammunition. According to his own testimony he felt sorry for the people he shot at but kept on shooting because he felt that otherwise he and his comrades would be killed. Over the course of the day he fired 12'000 rounds with the Mg 42 until he run out of ammo because no resupply arrived. He then proceeded to fire the 50 shots he carried for his 98k. According to him he missed 5 of these shots. By this time it was around 15:00 to 15:30. Out of ammo and alone he decided to leave his position and retreated. When he found the remains of his unit, his beloved Oberleutnant Frerking was missing. He was directing artillery fire from a bunker and didn't make it out alive, something that haunted Severloh his whole life.

This is the part we know and can verify to some degree, what remains unclear is the actual bodycount. Estimates vary from some hundred up to two thousand casualties inflicted by severlohe. While the second number pretty sure is too high, it's certain that he played a crucial role in the defense of his sector. What strikes me most is that he wasn't a typical hero, and he sure didn't see himself as one, but simply a man with a machine gun in a favourable position with many targets, enough ammo and a reason to keep fighting (saving his comrades).

Sources: a documentary called "Todfeinde von Omaha Beach" by Alexander Czogolla is how I first found out about him.

His autobiography "Erinnerungen an die Normandie 6.Juni 1944"