This covers the period from Augustus’ reorganisation until the defeat in civil war of Albinus by Septimius Severus. This is the period of the legionary equipped with pilum, now shorter gladius sword, semi-cylindrical rectangular shield, iron helmet and lorica segmentata banded iron corslet that is the popular image of the Roman legionary, although they were not all used universally. Some eastern units may have retained their mail and by the end of the period oval shields were replacing rectangular, firstly in the praetorian guards. Auxiliary equites (cavalry) and pedites (infantry) were regularly recruited and became citizens at the end of their career. They were uniformly equipped and drilled, were armed with short spear, javelins and long swords, had more convenient oval shields bearing regimental patterns, wore mail corslets (probably initially cut down from those previously worn by legionaries of which there were large stocks) and had helmets (initially bronze but quickly replaced by iron). A few alae of otherwise similar contariorum catafractari lancers formed by Trajan and Hadrian were equipped with the long two-handed kontos, had no shields and rode unarmoured horses. Numidians and Moors provided their native javelin-throwing light horse. Archers were mostly easterners depicted in long tunic, mail and acorn-shaped helmet. Symmachiarii were German or British irregulars. Dromedarii camel men were first raised by Hadrian and used as border scouts. The elephant and camels brought by Claudius when he invaded Britain were too few to be included here. References: Armies and Enemies of Imperial Rome P. Barker, The Roman Army at War 100 BC-AD 200 A. Goldsworthy, The Long Year AD 69 K. Wellesley, The Roman Legions Recreated in Colour Photographs D. Peterson, Imperial Governor G. Shipway (novel), The Provincial Governor J. Scott (novel), Year of Four Caesars H. Nield (novel).
— Early Imperial Roman Army 25 BC - 197 AD
I/47 — ILLYRIAN 700 BC - 10 AD
I/48 — THRACIAN 700 BC - 46 AD
I/58 — MEROITIC KUSHITE 592 BC - 350 AD
I/7 — EARLY LIBYAN 3000 BC - 70 AD
II/14 — ARIARATHID KAPPADOKIAN 330 BC - 322 BC & 300 BC - 17 AD
II/22 — ARABO-ARAMAEAN 312 BC - 240 AD
II/23 — LATER PRE-ISLAMIC ARAB 312 BC - 633 AD
II/24 — EARLY RHOXOLANI SARMATIAN 310 BC - 100 AD
II/25 — BOSPORAN 310 BC - 107 BC & 10 BC - 375 AD
II/26 — SIRACAE, IAZYGES & LATER RHOXOLANI SARMATIAN 310 BC - 375 AD
II/28 — EARLY ARMENIAN & GORDYENE 300 BC - 627 AD
II/37 — PARTHIAN 250 BC - 225 AD
II/40 — NUMIDIAN & EARLY MOORISH 215 BC - 24 AD
II/44 — COMMAGENE 163 BC - 17 AD & 38 AD - 72 AD
II/47 — EARLY GERMAN 115 BC - 250 AD
II/51 — LATE JUDAEAN 63 BC - 6 AD
II/52 — DACIAN 60 BC - 106 AD & CARPI 106 AD - 380 AD
II/53 — ANCIENT BRITISH 55 BC - 75 AD
II/54 — SCOTS-IRISH 55 BC - 841 AD
II/55 — NOBADES, BLEMMYE & BEJA 30 BC - 1500 AD
II/56 — EARLY IMPERIAL ROMAN 25 BC - 197 AD
II/57 — LATER MOORISH 25 AD - 696 AD
II/58 — ALAN 50 AD - 1500 AD
II/59 — JEWISH REVOLTS 66 AD - 70 AD & 132 AD - 135 AD
II/60 — CALEDONIAN 75 AD - 211 AD
II/64 — MIDDLE IMPERIAL ROMAN 193 AD - 324 AD
II/22 — ARABO-ARAMAEAN 312 BC - 240 AD
II/28 — EARLY ARMENIAN & GORDYENE 300 BC - 627 AD
II/44 — COMMAGENE 163 BC - 17 AD & 38 AD - 72 AD
II/47 — EARLY GERMAN 115 BC - 250 AD
II/51 — LATE JUDAEAN 63 BC - 6 AD