Caesarian Legionary vs Pompeian Legionary

Rome’s Civil War 49–45 BC

William Horsted, Giuseppe Rava (Illustrator)

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English

Osprey
04 November 2025

History; Military history; Land forces & warfare; Battles & campaigns

Series: Combat

A fully illustrated study of the troops fighting for Caesar and Pompey in three major battles of the Roman Civil War.

Triggered by the tensions surrounding Julius Caesar’s return to Rome from Gaul, the civil war that broke out in 49 BC convulsed the Roman world. Commanders and troops loyal to Gnaeus Pompeius Magnus, known as Pompey, confronted those following Caesar in a series of brutal battles across the Mediterranean, from Hispania to Greece.

William Horsted assesses the similarities and differences between the evolving Caesarian and Pompeian armies, which included not only Roman legions but also auxiliaries from Gaul, Numidia and elsewhere. Even after Pompey’s defeat at Pharsalus (48 BC) and his subsequent death in Egypt, the conflict continued, with Pompey’s relatives and followers continuing the fight until 45 BC. The two armies are examined in the context of three major clashes of the conflict: Dyrrachium (48 BC) in present-day Albania; Thapsus (46 BC) in modern Tunisia; and Munda (45 BC) in Spain. The text is complemented by specially commissioned colour artwork and mapping as well as archive photographs.

By: William Horsted
Illustrated by: Giuseppe Rava (Illustrator)
Imprint: Osprey
Country of Publication: United Kingdom
Volume: 82
Dimensions: Height: 248mm, Width: 182mm, Spine: 8mm
Weight: 260g
ISBN: 9781472867049
ISBN 10: 1472867041
Series: Combat
Pages: 80
Publication Date: 04 November 2025
Audience: General/trade , ELT Advanced
Format: Paperback
Publisher's Status: Forthcoming

[subject to confirmation] Introduction The Opposing Sides Dyrrachium, 48 BC Thapsus, 46 BC Munda, 45 BC Analysis Aftermath Bibliography Index

William Horsted studied Ancient History at the University of Bristol. He is the author of The Numidians 300 BC–AD 300 in Osprey's Men-at-Arms series and British Celtic Warrior vs Roman Soldier in the Combat series.