Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Frontiers of the Roman Empire' has mentioned 'Castra' in the following places:
Occurrence Sentence Text Source
Part of a series on theMilitary of ancient Rome 753 BCE xe2x80x93 476 CE Structural history Army Unit types and ranks Decorations and punishments Legions Auxilia Generals Navy Fleets Admirals Campaign history Wars and battles Technological history Military engineering Castra Siege engines Triumphal arches Roads Political historyxc2xa0 Strategy and tactics Infantry tactics Frontiers and fortifications Limes Limes Britannicus Antonine Wall Hadrian's Wall Saxon Shore Limes Germanicus Alb Limes Lauter Valley Limes Lower Germanic Limes Main Limes Neckar-Odenwald Limes Upper Germanic-Rhaetian Limes Wetterau Limes Danubexe2x80x93Illerxe2x80x93Rhine Limes Norican Limes Claustra Alpium Iuliarum Pannonian Limes Limes Alutanus Limes Moesiae Trajan's Wall Anastasian Wall Limes Sarmatiae Limes Arabicus Limes Tripolitanus Limes Mauretaniae xc2xa0Ancient Rome portal xe2x80xa2 xc2xa0War portalvte
The guards were stationed in nearby castra and watchtowers usually built immediately on the Rhine.
The northern border of Rhaetia formed the pars superior (upper part), the western border was the pars media (central part) with the fortified town of Cambodunum and bases from Vemania (Isny im Allgxc3xa4u) to Cassilacum (Memmingen); the pars inferior (lower part) was the section between Castra Regina (Regensburg) and Batavis (Passau).
From the 2nd century, the strategic reserve was formed from three legions stationed in Mogontiacum/Mainz, Argentorate/Strasbourg and Castra Regina/Regensburg.
Castra Contra Aquincum or Celemantia) and military stations on main transport routes in the Barbaricum (e.g.