The Britsh Isles ISOT'd from 1485 to 42 AD

English longbowmen were trained to keep several of their arrows in the air simultaneously. The arrows could also penetrate a knight's armour, body, and horse in one hit.

A Roman infantry formation would be massacred on the first volley.

Imagine hiding behind your shield as cover, expecting whatever arrows fired at you to shatter against or rebound off your shield as they always did... only for them to go straight through it, you, and your friend behind you.
Not really. English archers were a huge advantage, but they have a limited supply of arrows. 60-70 per man from what I've read. A Roman Legion of the time was 5,000 men plus Auxiliaries which usually numbered another 5,000 men. So unless you have a 100% hit rate, you're going to need thousands of archers to decimate a Legion.
 
Not really. English archers were a huge advantage, but they have a limited supply of arrows. 60-70 per man from what I've read. A Roman Legion of the time was 5,000 men plus Auxiliaries which usually numbered another 5,000 men. So unless you have a 100% hit rate, you're going to need thousands of archers to decimate a Legion.
Which is difficult, given that a longbowman starts in early childhood and a legionnaire takes only a few years to train- even ignoring the population difference, there WILL be a longbowman shortage.
 
Which is difficult, given that a longbowman starts in early childhood and a legionnaire takes only a few years to train- even ignoring the population difference, there WILL be a longbowman shortage.
There's also the problem that most English archers were there equivalent of the National Guard. Soldiering was not their normal job. A Legionnaire on the other hand was a professional soldier. So quality is also going to favor the legion. Particularly if they can close and engage in have to hand combat. If the Legion can close in, then the English are likely fucked.
 
English longbowmen were trained to keep several of their arrows in the air simultaneously. The arrows could also penetrate a knight's armour, body, and horse in one hit.

A Roman infantry formation would be massacred on the first volley.

Imagine hiding behind your shield as cover, expecting whatever arrows fired at you to shatter against or rebound off your shield as they always did... only for them to go straight through it, you, and your friend behind you.
... Okay, I can actually buy the first statement, because it's actually possible if you're shooting at something far enough away. I don't believe the second.

Second statement is impossible, it's akin to firing high caliber rifles. Arrows can penetrate light metal armor and the leather backing behind it, but not reasonable quality plate and not that plus a lot of flesh. Arrow isn't a bullet with minimal surface area and no tail.

Regardless, Rome has a number of problems dealing with massed archery. The biggest is that Rome wasn't built for battlefield mobility when there is time pressure on getting pounded from range. It wasn't something they had to deal with. It's not as hopeless as Carrhae where the arrow spammers are also mounted on horseback, but the limitations are the same. In walking formation much of the body is exposed to arrows even with the shields. In testudo they are protected but cannot move and are also (they will discover) a good target for gunpowder weapons.

Mind, the English heavy infantry of this period is quite dangerous itself to a Roman legionarie so it's not just a question of getting through that 50-200 yard range bracket alive on foot. This also applies to naval warfare.
 
Keep in mind that you don't need to kill every single soldier to break any army, including a legion- they're going to break far, far sooner than that.

Add in the fact that a legionary... isn't exactly the most mobile soldier, and I can't see the first few battles, at least, going well for the Romans.

As for invading England... I can't believe that would happen. Opposed amphibious landings are hell when you hold naval superiority, and the Romans certainly don't, and likely never will. They might land the first wave, and then every single ship after that gets pounded to pieces until the English ships run out of powder and shot.
 
The Romans wont be retaking anything past the channel, yeah. The question is if the Brits will be able to take, or, rather, hold anything on the Continent.
 
A minor point to a comment above but a testudo isn't immobile it just moves very slowly.

Beyond that English armies of the war of the roses tended to be predominately foot consisting of nobles and their men of arms generally fighting on foot as well as companies of archers and footmen(billmen). with English Calvary forces acting primary as scouting and foraging parties at times complimented by continental mercenaries.

A major problem for English armies of this time was nobles and their forces betraying one side or another during battle wasn't uncommon even without getting into the whole York, Lancaster royal house hostilities for the throne and the hostility between the northern and southern lords often causing serious problems.

As far as naval forces go the English honestly effectively don't have a navy with most of their ships being merchant ships put into military service as demand needs and the lack of proper navy forces was a ongoing problem for the English which fed into the house of Tudor's naval ambitions after they came to power.

Beyond England's internal problems, the English were apparently coming close to losing direct control of the Irish pale or at least what was left of it and their domination beyond in Ireland as a whole to native Gaelic rulers and Gaelicised lords to the point that English control of Ireland was apparently largely limited to a small area around Dublin and of course there was the ongoing border wars along the English-Scottish border.
 
Do the romans have anything that can really respond to English shock cavalry at this point?

Nope. The English in this period often dismounted their cavalry to fight on foot. The main reason they did that was what happens to horses under massed archery and crossbow fire. The knight is fine (for battlefield odds of death anyway) except for the whole pileup car crash thing...

Once they conclude that the new opponent doesn't have that threat, they're mounting back up.
 
Last edited:
True, Rome won't have any frame for "these people are from the future." And the 1480s British aren't so obviously godlike that substitution of the island is the only explanation. They're much more advanced but, bar the gunpowder, in ways that are not outside context. So they are "clearly" invaders from elsewhere/uprising. It's not like 1632 where the downtimers are remarkably chill about being fuckmurdered by these strange, highly accurate, incredibly long ranged repeating arquebuses. Much more plausible that Rome just thinks of this as a tough new adversary.
They'd figure it out relatively quickly I think. They generally knew what Britain looked like before so when they see all these towns and cities that weren't there before full of people speaking strange languages that'll tip them off that something strange has happened that can't be explained by an invasion or uprising. They'll also start encountering literature that talks about Rome in the past tense along with a bunch of other stuff that didn't happen. The English will of course know exactly what's up. They know that the Europe they were familiar with is gone, they know what Romans are and would have had a vague idea of what their society looked like at this point, so the Romans will start cluing in pretty fast when the English start telling them they're from the future.
English longbowmen were trained to keep several of their arrows in the air simultaneously. The arrows could also penetrate a knight's armour, body, and horse in one hit.
Yeah no that account is pretty bunk. Contemporary accounts of Norman battles against Flemish longbowmen describe the Normans fighting in spite of their armor being pin cushioned by dozens of arrows, and that's pretty close to what modern testing consistently demonstrates.
Which is difficult, given that a longbowman starts in early childhood and a legionnaire takes only a few years to train- even ignoring the population difference, there WILL be a longbowman shortage.
They'll have an everything shortage. Even if their infantry are of considerably higher quality (and I can believe this based on what I've heard about the training of men at arms and longbowmen), an English coalition would never be more than one or two bad defeats away from losing everything. The Romans can just keep throwing stuff at the wall until something sticks.
5 - if the Romans really, really want to conquer England they probably would - but this would be such a costly vanity project that I'd not expect Claudius to push for it.
I feel like the original conquest of Britain would be more of a costly vanity project than this. England actually has enough wealth that the Romans could use to cover the costs of the occupation and then some.
A major problem for English armies of this time was nobles and their forces betraying one side or another during battle wasn't uncommon even without getting into the whole York, Lancaster royal house hostilities for the throne and the hostility between the northern and southern lords often causing serious problems.
This will probably be the Roman point of entry. Paying a claimant off and then backing their ascension to the throne is a pretty conventional conquest tactic and it probably won't be hard for them to find a Yorkist or Tudor willing to say 'yes' to a big chest of gold.
 
Last edited:
One thing to note is, forget black powder, longbows and all that. A Roman with a gladius is really fucked against a soldier in full plate. Yeah, you can stab at the face or in the armpits, but that's easier said than done, especially since those are the only parts the man at arms has to actually worry about. Also, if the Romans were bummed by the anti-armour performance of Dacian falxes, they'll be livid when they encounter poleaxes or bills.

However the Romans have the advantage in manpower and logistics, if not that huge by that point in time, the battle of Towton - the largest battle in the War of the Roses - had about 60k soldiers total in it, which means that either side outmans the historical 43 invasion of Britain with its 20k men. But Romans did field armies in the 60-80k when needed.
 
Last edited:
The thing that would really weird out the Romans would be stuff like the Roman baths at Bath. Physical evidence that their own civilization would end up just like all the others that left ruins dotted around Europe would be disconcerting.
 
I'd honestly forgotten about this topic. :rofl:

I based my view on information from the Battle of Argincourt, where it was written a French knight and his horse got impaled through and through, IIRC.

Though, I have read conflicting accounts, so that should be taken with a grain if salt.

However!

Longbowmen were often trained from such a young age to be proficient with the bow that it literally deformed their shoulders, arms, and even the fingers they used to draw the string, as they grew into adolescence and adulthood (see recovered skeletons from the Mary Rose as an example).

On average, a longbow drew 90-110 pounds of force. Yeah.

Trained archers kept numerous arrows in the air simultaneously. Even on the low-end where they could only keep two or three airborne at the same time, a small formation of just fifty men with a quiver of just twenty-five each, as an example? Hailstorm.

They also often launched everything they had, and if arrows were irrecoverable switched to other weapons, but that's a side-note.

All this, versus the iron-based metalworking in various Roman infantry armour and shields? They'd get skewered, in formation.
 
I based my view on information from the Battle of Argincourt, where it was written a French knight and his horse got impaled through and through, IIRC.
So, I decided to do some basic checking around, and I did see this:
Gerald of Wales said:
[I ]n the war against the Welsh, one of the men of arms was struck by an arrow shot at him by a Welshman. It went right through his thigh, high up, where it was protected inside and outside the leg by his iron chausses, and then through the skirt of his leather tunic; next it penetrated that part of the saddle which is called the alva or seat; and finally it lodged in his horse, driving so deep that it killed the animal.

Naturally, it's from Wikipedia, so I decided to chase down the original text, which has a slightly different story:
Gerald of Wales said:
... William de Braose also testifies that one of his soldiers, in a conflict with the Welsh, was wounded by an arrow, which passed through his thigh and the armour with which it was cased on both sides, and, through that part of the saddle which is called the alva, mortally wounded the horse. Another soldier had his hip, equally sheathed in armour, penetrated by an arrow quite to the saddle, and on turning his horse round, received a similar wound on the opposite hip, which fixed him on both sides of his seat. ...
In particular, 'killed' becomes 'mortally wounded', which does actually have a different meaning. Gerald goes on to claim that these Welsh bows have pretty awful range.

As for the veracity of the claim - tests done with very powerful bows at point-blank range can penetrate chain, but then have trouble with the padding underneath. I find the claim of being able to penetrate not one, but two layers of armor (technically four) and the 4+ inches of thigh on the soldier, and his saddle and then penetrating the horse to a significant degree ... look, most people call skydiving without a parachute suicide. Just because Bear Grylls once survived a 1600-foot fall doesn't mean you should claim that humans can jump out of planes and survive.

More to the point: at Crecy, at Agincourt, at Poitiers - all the battles famed for demonstrating the power of the longbow - the French still closed the gap. At Poitiers:
Next the Dauphin attacked Salisbury and pressed his advance in spite of heavy fire by the English archers and complications of running into the retreating vanguard of Clermont's force. Green suggest that the Dauphin had about 4000 troops with him in this phase of the attack. He advanced to the English lines but ultimately fell back. The French were unable to penetrate the protective hedge the English were using. This phase of the attack lasted about two hours and the positions are shown in the map above on the left.
Four thousand men make an assault, under arrow fire, and aren't immediately slaughtered by archers. In fact, they make it to the English lines and engage in melee! If we took you as even vaguely correct, a hundred archers would be able to shatter that attack with ease.


Trained archers kept numerous arrows in the air simultaneously. Even on the low-end where they could only keep two or three airborne at the same time, a small formation of just fifty men with a quiver of just twenty-five each, as an example? Hailstorm.
Look, I can keep a couple arrows in the air at once, and I'm nowhere near a trained archer. This claim doesn't say anything useful. A claim that is useful is the one for rate of fire:
A typical military longbow archer would be provided with between 60 and 72 arrows at the time of battle. Most archers would not shoot arrows at maximum rate, as it would exhaust even the most experienced man. "With the heaviest bows [a modern war bow archer] does not like to try for more than six a minute."
...
In tests against a moving target simulating a galloping knight[35] it took some approximately seven seconds to draw, aim and loose an armour-piercing heavy arrow using a replica war bow.
That's from Wikipedia, of course. Here's something else:
Barnabe Rich said:
But let it be that one thowsand Archers and one thowsande shot should meete in the playne feelde where no vantage were to be taken by the ground, & admit they were ioyned in skirmish, within .viii or .ix score where the Archer is able to shutte twice to the others once, wherby the Arrowes comming so thick amonst them, wil so astone them that the contrarye part shall not well know where at to shoote.
Barnabe Rich was a 16th-century soldier, and his opinion here is that an archer would get about twice as many shots as an harquebusier - again, around six arrows per minute, given that reloading an arquebus would take a good twenty seconds.


So, yeah, the idea that Longbows = Instant Win against the Romans is something that has ... basically no real substance behind it.
 
First: Kudos to you for doing your research.

As to the meat of your post: I agree that longbowmen are by no means an "I win" button, but given that this would be well before the Roman's development/usage of compound bows, it would still be a significant advantage.

And, of course, the English are going to have significantly better weapons and armor via steel than the Romans can get their hands on(at least in large quantities).
 
oh yeah, archery, especially in Britain, was really kinda shit during the Iron Age, and only the Welsh in Sub-Roman Britain had anything approaching medieval standards.

Damn we should have just ISOTd Wales
 
[...]
I'm not sure whether the English had caught up with the fact that heavy infantry rulz.
[...]
One : are you totally unaware of how the late medieval English fought? English men-at-arms were notorious for their tendency to fight dismounted with polearms rather than on horse.
Two : yes, the Romans knew of and had fought Parthian cataphracts. Not that successfully, mind you. The Romans still had trouble winning wars against the Parthians in the 1st century. Also, there is a significant difference between this :

And this :

Yes, the principle is the same, but it's akin to how a T-26 and and a PzKpfw IV are the same thing.
Three : very good point on the gap in siege warfare technology and experience.

Plus, on the topic of "heavy" infantry - does the lorica segmentata offer any extra protection over a brigandine?
 
Last edited:
Actually dismounted men at arms fought as plain infantry, entering battle on foot, not as mounted infantry. So they are heavy infantry through and through.

One thing to note, though, is that without supplemental armour a brigandine offers less shoulder protection than lorica segmentata. But on the other end you also find stuff like this :
 
Hmm while Crassus's defeat is famous it should perhaps be noted that the Romans had in fact fought the Parthians and other peoples who used horse archers and cataphracts and won.

The Roman General Publius Ventidius Bassus for example won three decisve victories on the Parthians in the aftermath of Crassus's defeat which lead to him being the first roman general to celebrate a triumph in relation to defeating the Parthians.

As far as roman armor goes well from what I understand and can find on the matter Lorica segmentata the armor was effectively segmented plates made of mild steel over a iron core. Also there is some evidence from the first century that manica, arm guards made of segimented iron or bronze plates were in use by some roman solders with some examples being dug up from the 1st century forts as well as depictions of them in the 2nd and third centuries and of course metal grooves made of iron and bronze over leather were in wide spread use. Also Scale armor and mail remained in use among Roman solders even when segimented plate was in use.

On the English front besides plate armors coats of jacks and other armors with bits of metal in them it should also be remembered that cloth armor was also still very common during this time in england and elsewhere in europe usually coupled with a metal helmet.
 
What is Latin for Sealion? Which is what the invasion turns into. Unless the Romans can come up with an excuse for the whole killing Jesus thing and quickly. They have a country that believes God has sent them on a mission of vengeance .
 
What is Latin for Sealion? Which is what the invasion turns into. Unless the Romans can come up with an excuse for the whole killing Jesus thing and quickly. They have a country that believes God has sent them on a mission of vengeance .
The English aren't gonna be pushing into continental Europe any time soon.

They don't have anywhere near the manpower or logistics to even begin to attack Roman holdings.
 
Which is without getting into their internal political problems well as the problems in Ireland and the long on going problems with Scotland or what havoc the transference has likely done to the English economy.

Also its likely the Romans might, just might notice the changes in a year before the invasion including that all their client states in southern Britain have disappeared along with the disruption of trade and that like I noted before the king they were trying to restore to his throne as the pretext for the invasion no longer has a throne to be restored to.
 
Back
Top