[Tallguy]

Primitive weapons are ineffective when pitted against modern weapons. They can be highly efficient at slaughter when pitted against other primitive weapons or the unarmed. All you need is soldiers willing to keep killing.

I saw an interesting reconstruction of the Battle of Agincourt. You may recall that the English Logbow was credited with virtually wiping out the massed armored knights of the French Army. The battle reconstruction focused on the narrow frontage & treated the French heavy cavalry charge from a "crowd control" perspective. Essentially the heavily armed & armored French were hemmed in so tightly that there wasn't enough room to fight -- or to escape. They literally trampled themselves & those survivors were slaughtered by the English -- many after they surrendered.

[Restorer]

Similarities to what happened at Cannae. The Roman soldiers were so tightly packed together that many of them were crushed and died while still standing.