Roman sources did not note the Hun fighting style as being worthy of comment.
Try to find references to the specifics of the Mongolian onion in synchronous messages. Meanwhile, it was. Similarly, the Hunnic progress in the field of bows is an indisputable fact. If it is not reflected in the sources, these are the problems of the sources, not the Huns and their bows.
Everything is quite simple.
1. Horse archers by the end of the 4th century are banal, like a runny nose - sagitarii were in the Roman army itself.
2. In order to assess the nuances, appropriate prerequisites were needed, which were completely absent from many writing "sofa troops" (c) Who had very little time left to write quietly.
3. The Roman military faced the Huns on a large scale 17 years after Adrianople. At the same time, in the same 395 year legions begin to bare the Rhine border. In a few years it will be necessary to fight the barbarians in Italy, and in 15 years Rome will be plundered. In general, the Romans had no time for mass written reflections.
Peter Heather, for instance, endorses a sort of 'domino theory' about the Huns; where the Hunnic development of a superior compound bow allowed them to dominate their neighbors, either forcing their neighbors to flee whereupon they set up a chain reaction leading to the defeat of the Ermaneric or allowing the Huns to become a 'supergroup'. When Roman sources don't make any particular note of the Hunnic fighting style, the idea that there was something special about the Huns fighting style that made them particularly effective is difficult to support.
The Huns began their expansion to the west from the refuge of losers between the Volga and Emba. There were corny few of them. And this did not prevent them from conquering the Sarmatians, who were armed to the teeth and did not suffer (to put it mildly) from pacifism/Alan and Ostrogotov. At the same time, the Visigoths and part of the Sarmatians who fled from them caused Rome problems up to lethal ones. To invent another basic explanation other than the technical superiority fully supported by archaeology... is VERY strange.
Yes, there were climatic changes, etc., but without the appropriate prerequisites, the Huns had no more chance of becoming a scourge of God than the Pechenegs, Nogais and the northern branch of the Oguz. Nogais were trivially crushed during a similar cold snap (the Little Ice Age). Now they are a small people already in Dagestan.
Vegetius' writings on military matters was never intended -and should never be read- as a "Doctrines and Practice of the Late Roman Army". It was an intentionally classicizing text
It was a text addressed to the Emperor. At the same time, if Vegetius wrote the first book on his own initiative, then the next three by order of the emperor.
and dreaming up nonsense weapons - like scythed chariots and chariot mounted ballista - that would definitely send the barbarians packing!
1. And now we look at the original. Where , just in case , the struggle with chariots is described.
«24. Kings Antiochus and Mithridates used chariots with scythes drawn by four horses in their military campaigns. At first they caused great fear, but then they became the subject of ridicule. It is difficult for such a chariot with scythes to find a completely flat field, it is delayed by the slightest obstacle, and if at least one horse is hit or wounded, the chariot is already out of order. But these chariots lost all significance mainly due to the following Roman technique: when a battle began, the Romans quickly scattered traps (tribules) across the field; when rolling chariots hit them, they died. A trap is a defensive weapon made of four sharpened stakes; no matter how it is thrown, it becomes firmly on three stakes, and the fourth, raised up, causes harm».
Nonsense in this case is not invented by Vegetius.
2. "Sometimes it is necessary to place carroballists (ballistae on carts) of a larger than usual size behind the formation – they throw spears further and with greater force; they are put on carts pulled by a pair of horses or mules",
Vegetius describes a banality. Nonsense in the form of ballistae on wheeled machines we see on Trajan's column.
(For example, Vegetius complained that Roman soldiers were too weak and lazy to wear armor.
"But when, with the advent of negligence and the desire for idleness, the exercise in the field began to stop, it was considered that the weapon was very heavy, since the soldiers rarely began to wear it. Therefore, the warriors began to demand from the emperor first regarding the shells, and then the helmets... to refuse"
Terribly improbable. The problem is that
1. In Russia there were problems with the discipline of the army just twenty years ago, and the first victim of them were bulletproof vests.
2. The crisis of the 3rd century with the leapfrog of soldier emperors definitely led to a sharp reduction in the use of armor.
The drop in discipline was not the only reason, but was present with a probability of 99.99999%.
3. Are you sure that at the end of the 4th century the Roman army was as prosperous as ever?
sources are otherwise silent
"You know how easy it is to arm the Romans..." (Getica, 204)28.
and archaeology shows no particular decline in the use of armor by Roman soldiers
1. How can archaeology generally show a decrease in the use of available armor by soldiers
2. At the same time, in reality, it shows this.
Most of the late Roman images of soldiers are without armor.
There are practically no finds of helmets of the 3rd century.
Helmets of the 4th century are peculiar. "The next infantry helmets appear more than a hundred years later. They can be called helmets of the Intersyza type, from the Intersyza in Hungary, where at least four such helmets have been found. These helmets are nothing like the early Legionary helmets. They are made of iron, of very rough construction, and consist of two halves connected along the ridge."
That is, even helmets were made poorly. The advanced lorica segmentata disappears. Are you sure that such an "industry" has flooded the army with armor?
Indeed, it would be very strange if the Roman army were to simply stop using armor for a century or so, and then re-adopt its widespread use with the well-documented early Byzantine armies.)
1. Try to read Vegetius. There is no question of a complete rejection of armor. Cavalry and "non-commissioned officers" used them
2. See above. The Romans have a very characteristic design gap.
In short, the chaos of the 3rd century has definitely led to a sharp decline in the use of armor. Obviously, both because of problems with production, and because of a drop in discipline. At the same time, at the end of the 4th century, we again see a progressive mess.