Statistics for occurrence #1 of “Chalcis” in book 1, chapter 15 of Thucydides, The Peloponnesian War:
...sisted merely of local warfare between rival
neighbors.
The nearest approach to a coalition took place in the old war between
Chalcis and Eretria; this was a quarrel in which the rest of the Hellenic name did to some
extent take sides.
...