Castles and Citadels

Bulwark with bastilles 
with parapet support props

Earthwork embankments
with garrison and grip

Safety and secureness
from seafarers in ship 

Battlements of bastions
strengthening the stockade

Reinforcements of soldiers blocking the barricade

Warfares of weaponry
betwixt fortification

Aegis with resistance
deterrence and protection

Grenades with gunpowder, an arsenal of Amos

Smokiness bellows amongst the shadows

Torpedos and missiles
safeguarding tall towers

Centuries guard in the worrying wee small hours

Armament from antagonist, self-defense and salvation