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This article is part of the series on: Military of ancient Rome 753 BC – AD 476 | |
| Structural history | |
|---|---|
| Roman army (unit types and ranks, legions, auxiliaries, generals) | |
| Roman navy (fleets, admirals) | |
| Campaign history | |
| Lists of wars and battles | |
| Decorations and punishments | |
| Technological history | |
| Military engineering (castra, siege engines, arches) | |
| Political history | |
| Strategy and tactics | |
| Infantry tactics | |
| Frontiers and fortifications (limes, Hadrian's Wall) | |
A castellum is a small Roman detached fort or fortlet used as a watch tower or signal station. The Latin word castellum is a diminutive of castra ("military camp"), which in turn is the plural of castrum ("watchpost"); it is the source of the English word "castle".
The term castellum was also used to refer to a settling or storage reservoir along the length of an aqueduct.
Reconstructed Limes watch tower, between Bad Nauheim and Pfaffenwiesbach, Germany.
The original article can be found at Castellum and the edit history here.