OK i am not familiar with the war: Peloponnesian War. But this complete MOC from Mpyromaxos was amazing. Check out the details of the landscaping and the architecture, it makes the war looks real from his creation, especially when the maker added Greek structures + Minifigures to the war scene.
The size is definitely not small, and we would expect huge amount of bricks being used on this MOC.
Quoted from the maker on this build:
“A small force of Spartan army was cutted from their main army of Sparta by Athenian army and their navy on the island of Sphacteria.
The Athenian forces manage to land on the island after a surprise attack and forced the Spartans to surrender!”