Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Eternal Mercenary | 1979 | Barry Sadler | Buy |
| 2 | God of Death | 1979 | Barry Sadler | Buy |
| 3 | The War Lord | 1980 | Barry Sadler | Buy |
| 4 | Panzer Soldier | 1980 | Barry Sadler | Buy |
| 5 | The Barbarian | 1981 | Barry Sadler | Buy |
| 6 | The Persian | 1982 | Barry Sadler | Buy |
| 7 | The Damned | 1982 | Barry Sadler | Buy |
| 8 | Soldier of Fortune | 1983 | Barry Sadler | Buy |
| 9 | The Sentinel | 1983 | Barry Sadler | Buy |
| 10 | The Conquistador | 1984 | Barry Sadler | Buy |
| 11 | The Legionnaire | 1984 | Barry Sadler | Buy |
| 12 | The African Mercenary | 1984 | Barry Sadler | Buy |
| 13 | The Assassin | 1985 | Barry Sadler | Buy |
| 14 | The Phoenix | 1985 | Barry Sadler | Buy |
| 15 | The Pirate | 1985 | Barry Sadler | Buy |
| 16 | Desert Mercenary | 1986 | Barry Sadler | Buy |
| 17 | The Warrior | 1987 | Barry Sadler | Buy |
| 18 | The Cursed | 1987 | Barry Sadler | Buy |
| 19 | The Samurai | 1988 | Barry Sadler | Buy |
| 20 | Soldier of Gideon | 1988 | Barry Sadler | Buy |
| 21 | The Trench Soldier | 1989 | Barry Sadler | Buy |
| 22 | The Mongol | 1990 | Barry Sadler | Buy |
| 23 | The Liberator | 1999 | Barry Sadler | Buy |
| 24 | The Defiant | 2001 | Barry Sadler | Buy |
| 25 | Johnny Reb | 2007 | Barry Sadler | Buy |
| 26 | Napoleon’s Soldier | 2009 | Barry Sadler | Buy |
| 27 | The Outlaw | 2010 | Barry Sadler | Buy |
| 28 | Devil’s Horseman | 2010 | Barry Sadler | Buy |
| 29 | The Minuteman | 2011 | Barry Sadler | Buy |
| 30 | Roman Mercenary | 2012 | Barry Sadler | Buy |
| 31 | The Crusader | 2014 | Barry Sadler | Buy |
| 32 | The Longbowman | 2014 | Barry Sadler | Buy |
| 33 | Barbarossa | 2015 | Barry Sadler | Buy |
| 34 | Scourge Of Asia | 2015 | Barry Sadler | Buy |
| 35 | Balkan Mercenary | 2016 | Barry Sadler | Buy |
| 36 | The Cavalryman | 2017 | Barry Sadler | Buy |
| 37 | The Saracen | 2019 | Barry Sadler | Buy |
| 38 | The Rough Rider | 2020 | Barry Sadler | Buy |
| 39 | The Last Defender | 2020 | Barry Sadler | Buy |
| 40 | The Killer | 2021 | Barry Sadler | Buy |
| 41 | The Moor | 2021 | Barry Sadler | Buy |
| 42 | The Iron Duke’s Man | 2022 | Barry Sadler | Buy |
| 43 | The Red Rose | 2022 | Barry Sadler | Buy |
| 44 | The Hunter | 2023 | Barry Sadler | Buy |
| 45 | The Explorer | 2023 | Barry Sadler | Buy |
| 46 | Halls of Montezuma | 2006 | Barry Sadler | Buy |
| 47 | Immortal Dragon | 2008 | Barry Sadler | Buy |
| 48 | The Avenger | 2008 | Barry Sadler | Buy |
| 49 | The Confederate | 2008 | Barry Sadler | Buy |
| 50 | The Conqueror | 2009 | Barry Sadler | Buy |
| 51 | The Anzac | 2010 | Barry Sadler | Buy |
| 52 | The Continental | 2012 | Barry Sadler | Buy |
| 53 | Blitzkrieg | 2014 | Barry Sadler | Buy |
| 54 | Sword Of The Brotherhood | 2014 | Barry Sadler | Buy |
| 55 | Emperor’s Mercenary | 2016 | Barry Sadler | Buy |
| 56 | The Viking | 2017 | Barry Sadler | Buy |
| 57 | The Austrian | 2018 | Barry Sadler | Buy |
| 58 | The Lombard | 2018 | Barry Sadler | Buy |
| 59 | The Commissar | 2019 | Barry Sadler | Buy |
The Casca series is a long-running military adventure saga that follows the immortal soldier Casca Rufio Longinus through wars across two thousand years of history. Barry Sadler created the series in 1979 with The Eternal Mercenary, and wrote 22 books before his death in 1989. Other authors, most notably Tony Roberts, have continued the series, bringing it to 59 books as of 2023.
Each book drops Casca into a different historical era and conflict. The Eternal Mercenary begins his story in Rome, while subsequent books place him among the Persians, Mongols, Crusaders, Vikings, and in modern conflicts including both World Wars and Vietnam. The premise allows the series to cover an enormous range of historical settings while following a single protagonist who cannot die but must keep fighting.