The weakness of hoplites against cavalry?

[VikingPower]

When the Greeks fought against the Persians then their hoplites were at a disadvantage against cavalry.
And the similar thing applied when the Greeks fought amongst themselves.

I thought that heavy infantry could not be frontal charged by cavalry, or the cavalry would be the one to suffer losses, but not the other way around.

Can somebody explain the reasons behind it?

Did the cavalry at that time use over-hand spears, or lances?
Could not the hoplites outreach the enemy cavalry with their spears? or absorb the cavalry charge with their shieldwall?

The cavalry can of course employ hit-and-run tactics, by going around the hoplites and attack them from the flanks or where they are unprepared. It would be exhausting for the hoplites to be constantly changing directions, and in running back and forth. Or the enemy cavalry attacked the hoplites in small groups, so the hoplites were not as tight together.

But the question is about 1v1 duel, on equal terms.

[Bodeni]

The best way of explaining this is to look at Alexander the Great's strategy, since it was pretty much the apex of Hellenic warfare. It's not the case that "pike beats cavalry" or "artillery beats pike" but of putting the right soldiers in the right places at the right times.
First off, the notion of "1 vs 1" is irrelevant. Secondly, you're right in that cavalry are useless against heavy infantry head on; However, Thirdly, attacking the flank of a rigid formation, whether a Sarissa phalanx or a hoplite one, is brutally effective as the survival of the unit relies upon keeping formation. Finally, it's a little bit vague to just say "Greeks and Persians"; or "hoplites and cavalry" for that matter. If there was a more specific example you were thinking of I think I could be more helpful.

[VikingPower]

The battle of Platea, according to Herodotus.

The Sicilian expedition, during the Peloponnesian war.

Agesilaus expedition in minor Asia.

I have recently read the work of Herodotus, Thucidydes, and Xeneophon ('Hellenica').

There are many referances about a 'hollow square', similar to the Roman tactic against the Parthians.

Could not hoplites have formed many 'infantry squares', like what the Europeans did during the Napoleon wars?

The general idea is to fight only from one direction at a time, while none of the backs are exposed.

[Bodeni]

The battle of Platea, according to Herodotus.

The Sicilian expedition, during the Peloponnesian war.

Agesilaus expedition in minor Asia.

I have recently read the work of Herodotus, Thucidydes, and Xeneophon ('Hellenica').

There are many referances about a 'hollow square', similar to the Roman tactic against the Parthians.

Could not hoplites have formed many 'infantry squares', like what the Europeans did during the Napoleon wars?

The general idea is to fight only from one direction at a time, while none of the backs are exposed.

Main problem with the "Infantry square" is that it can only be a couple of men thick. Fine and dandy when you have bayonets and muskets, or when you know your enemy is largely mounted. But a very large majority of battles consist primarily of infantry. A hoplite in the Peloponnesian war for example, was 8 men thick. Combined with its breadth, such a formation makes a schiltron, or square, useless. Another point to note is that hoplites were not as mobile or well drilled in maneuvers as the later Roman soldiers were.

I can't say I know much about Agesilaus' battles, but for the others, the sort of cavalry available would be mostly scouts, skirmishers and messengers. The Hellenic world wouldn't warm to the use of heavy cavalry until the later part of the 4th century BC. Thus the organised, wealthy, well armoured hoplites would carry quite some advantage.

[VikingPower]

A hoplite in the Peloponnesian war for example, was 8 men thick. Combined with its breadth, such a formation makes a schiltron, or square, useless.

Could you explain this in more detail?

I know that Greek infantry did tend to have about 8 ranks deep, 4 if undermanned, but 12 at most.
As the horizontal line is wider then the enemy will need to travel more distance before it is arrived at the flanks. But the flanks can have a longer vertical lines, to make it harder for the enemy to go around them. A similar principle applies with a hollow square, in protecting the corners.

[moonburn]

epaminondas hd lines 32 men deep nd broke the spartans with those formations (even tough i tend to believe that the 1st 3 men line died suffocated in the oychos from the other 29 lines pushing them against the spartan line)

but then again the shieldwall was rendered useless against the makedonian sarissa (even tough the true killers where their cavalary)

[Ibrahim]

Main problem with the "Infantry square" is that it can only be a couple of men thick. Fine and dandy when you have bayonets and muskets, or when you know your enemy is largely mounted. But a very large majority of battles consist primarily of infantry. A hoplite in the Peloponnesian war for example, was 8 men thick. Combined with its breadth, such a formation makes a schiltron, or square, useless. Another point to note is that hoplites were not as mobile or well drilled in maneuvers as the later Roman soldiers were.

I can't say I know much about Agesilaus' battles, but for the others, the sort of cavalry available would be mostly scouts, skirmishers and messengers. The Hellenic world wouldn't warm to the use of heavy cavalry until the later part of the 4th century BC. Thus the organised, wealthy, well armoured hoplites would carry quite some advantage.

infantry square were rarely, if ever, 2 ranks deep. the lowest number I've seen in European armies of the 18th and early 19th centuries was 3 ranks, and the norm for a square was 4 ranks. (the squares at Waterloo for examples, were 4 ranks deep: two men knelt in the front, two stood behind). This was because you needed "mass" to counter and stop the horse charge, should it attempt to crush through the square (which can, and did, happen, and no, not normally at the Gallup). Too thin, and the cavalry can just push its way through.

you are otherwise right though about square v. infantry (and archers).

[Thoras]

Regardless of depth, a horse won't ride into a fixed spear, nor indeed will it jump blind into a formation of men where it can't see where it will land.

You can actually train it to AND it was done,eventhough riding into a fixed spear was quite dumb.