What type of military defense seemed called for by the geography ancient greece?

Coastal forts. Greece is an archipelago, the coast line is so long it actually figures in the modern Greek flag.

Ancient Greece needed warriors with maritime knowledge,

(know about boats, navigation, fight in the sea, location through the stars, read maps)

Explanation:

because the geography of ancient Greece was limited in the south by the current Balkan peninsula and the islands and coasts of the entire Aegean Sea also extended to the south of present-day Italy and Sicily and other points of the Mediterranean coast.

I hope its help you

c) they were beaten and fired from their jobs.

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.