What are the best armies ever?

Turkish Horde. especially "Bordo Bereliler" elite troops..

Actualy when they met the Volga Bulgars(around the volga river today) - the Mongolian armies were defeated repeatidly until they sent in a 300 000 army, which included a lot of people from their provinces, against the Volga's 50000 and........  

well the outcome is obvious.   The Mongolian armies were also being defeated by the other Bulgarian kingdom (the Bulgaria today) for a while in the late 13th cent.

The army of Abbasid Caliphate once...

Most of the commanders were Turkish and served bravely to the Islam expansion. When the Arabs invaded central asia and Amu Derya, they met with Oguz Turks and they saw their warior abilities and horseman skills, and they were amazed. So they began to train Turkish wariors as Abbasid commanders and paid money to them. The Turks created a great success in conquests, so the Caliphs let Turkish wariors to be important military man and rich people of society...

C'mon pal, do you actually believe that the mongols had anything near 300 000 men? The army of Batu that invaded Volga Bolgar 1236 were at it's most a 100 000

I assume you're lumping the Huns in there - ?  Nobody ever had the domination and fighting ability like the Huns under Attila. 

Thank God for nosebleeds.    

"Unmatched mobility (the decisive factor in their success) tactical supremacy against anything and everything they faced, unparalleled ferocity, hardyness and cunning, superior organization and leadership, winning even when heavily outnumbered - definitely an army way ahead from what Europe (or anyone else) had at that time.
"

Not this again, just what "Unmatched Mobility and "Superior Organization" did the Mongols posses over the other horse based steppe armies? The Ordos decimal system existed thousands of years prior to the Mongols and used from Xiongnu down to the Khitan. While they are all mobile armies with little need for large baggage trains.

I've already posted this, the Mongol army's formation and Organization is little different from the Khitan, Liao, and Jurchen Jin armies, in fact almost identical.

 This is from account of Meng Hong which is the most detailed primary document on the Mongol army, while the Liao and Jin armies are well documented. In the early days of Jin as was in the Mongol army, the army consist of 5 ranks, 2 clad in iron armour and 3 in acquered hide. The army of Aguda was drawn up for battle in squadrons of 50 horsemen, 20 with heavy cuirasses and bows behind. A Mongol squadron number 100 men and from Plano Carpini�s accounts, it describe them arranged at intervals with the heavily armoured troops of each stationed at the front. The troops in the two front ranks wore complete armour, with swords and lance, and their horse also armoured. The rear 3 ranks wore no armour and their weapons were the bow and javelin. While a complete identical organization in the Jin is as follows, with the punian (the basic unit made up of 50 men) 20 men were supposed to be armoured and equipped with lances or halberds, and formed the front two ranks of the standard five-deep formation - known as the guaizima. The other three ranks consisted of lightly equipped archers. It has been suggested that this formation was designed to protect the archers from missiles while they softened up the enemy in preparation for a charge.
Both the Jin and Mongol troops begin the battle with the light troops, one body in support of another, advanced through the squadron intervals in the 2 front ranks and poured volleys of arrows into the opposing lines. Simultaneously one or both the wings began an eveloping movement to take the enemy flanks and rear. If the first storm of arrows succeeded in disordering his array, the shock troops received the command of charge. Should the light troops be repulsed by a charge, they retired shooting backward from the saddle, and other detachments took their place and repeated the arrow storm. If these were unsuccessful, the remaining light troops took up the assault.
Similar methods was deployed by the Khitans, In Meng Da Bei Lu, the Liao army was organised into a decimal system with regiments of 500 or 700 men, ten of which formed a division, with ten division making up an army. Attacks were carried out through a succession of controlled charges, each regiment advancing in turn before being replaced and withdrawn to rest. The attack is made by the 1st of the 10 squadrons, if it was successful then the other 9 would charge forward, but if it fail it was called to the back of the line to rest while the next squadron take its place. If necessary, it would be repeated for days until the enemy is exhausted. Then all 10 squadrons would charge and rout.The Mongol army was virtually identical to those of the early Khitan and Jin armies. All of which had soldiers keep ready 4 bows and 400 arrows. (Parkers, A thousand year of the tartars, p.258), the source of mongol army is mainly drawn from the accounts of the Han general Meng Hung.

This tactic was used by the Liao in their victory over the emperor Song Tai Zong at Gao liang river, and 100 years later by the Jurchen�s 20,000 against the Khitans themselves whose army numbered 100,000 and again 100 years later, the same combination of fire and shock by Mongols against the declining Jin at Hu Pu Da Gang. The battle procedure favored by the Mongols was therefore long tried and proven. It was Genghis that adopted their tactics, not his invention in anyway.

Saying that the Mongols revolutionized tactic is ridiculous, the only difference between the Mongol and Jurchen seems to be that the Mongols relied some more on light cavalry while the Jurchen had a more emphasize on the heavy cavalry in which they developed the Tie Fuo Tuo: A heavy cavalry that has two layer of armour and is virtually invulnerable to any missile. The Jin army that fought the Mongol was a completely different army that has more infantry than cavalry and years of peace has already depleted their efficiency. The mongols in their later days were the same and thats why they were easily defeated in battle by Ming losing over 80,000 troops.

The reason that mongols conquered further other than geographical factors was because of their vast supply of horses which neither the Jurchens nor the Qitans have, so eventually the Jin and Liao had to incorporate large infantry into their army for numbers. And since both the Jin and Liao are not purelly nomadic and they had already had long experience of Chinese influence, their conquest was directly followed by consolidation and administration, and the long years of peace eventually depleted their army efficiency. The same thing happened to the Yuan so their is nothing special about the Mongols in this respect.

"The samurai who "withstood the Mongol attack" in the 13th century dealt mainly with Chinese and Korean auxiliaries, who, with all due respect, weren't the most formidable troops of their day."

On infantry warfare they certain were.

In fact the initial Mongol Song war of 1234 was faught to a draw.

After the fall of Jin, The Southern Song despatched a force to recover LuoYang  KaiFeng and Nanjing from the Mongols. 
In the sixth month, Generals Quan ZiCai and Zhao Kui captured Kaifeng.

Then Quan marched to LuoYang forcing the Mongol to withdraw and he entered it in triumph.
But their provision was short and the Mongol force from ShanZhou under Shubutaibu returned to take LuoYang. The Song armies withdrew from Kaifeng and Luo Yang. The Mongols openeed the gates of the Yellow River to drown the Song army.
Then the Mongols followed up by an invasion of the Song
But in XiangHan and ChuanShu, HuBei and SiChuan, they were defeated by the Song under General Meng Qi although killing much people there.
Along the Huai river, they were also halted by General Du and Yu.

Even Kublai used Han infantry excessively and he was able to deploy Chinese infantry to a much more effective degree than his predecessors which depended almost solely on cavalry. In the battle Kublai faught with Kaidu and his mongolian collision. Kublai made his Han infantry dismount. When Kaidu's cavalry came near they were dismounted by the Han infantry and once they fell they became the immdediate prey of the Chinese swordsmen.