Equipped with, containing, or designed with bastions; fortified with projecting defensive structures.
From bastion plus the adjective suffix -ed, meaning 'having bastions' or 'furnished with bastions.' This describes fortifications specifically designed with the bastion system.
The shift to bastioned fortifications in the 1500s changed warfare entirely—these geometric, angled defenses made medieval castles obsolete and created a new science of military engineering that spread rapidly across Europe.
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