/mivacommon/member/pass.mv: Line 148: MvEXPORT: Runtime Error: Error writing to 'readers/pass_err.log': No such file or directory [TMP] "Military Service during the Principate" Topic

 Help support TMP


"Military Service during the Principate" Topic


13 Posts

All members in good standing are free to post here. Opinions expressed here are solely those of the posters, and have not been cleared with nor are they endorsed by The Miniatures Page.

For more information, see the TMP FAQ.


Back to the Ancients Discussion Message Board


Areas of Interest

Ancients

Featured Hobby News Article


Featured Link


Featured Ruleset


Featured Profile Article


Featured Book Review


10,685 hits since 19 Sep 2025
©1994-2025 Bill Armintrout
Comments or corrections?


TMP logo

Membership

Please sign in to your membership account, or, if you are not yet a member, please sign up for your free membership account.
The Trojan19 Sep 2025 6:17 p.m. PST

I keep coming across academic works that claim a soldier served for 25 years. In 13 BC, Augustus decreed all legionaries must serve for 16 years and all Praetorians for 12 years. In 5 AD, Augustus lengthened the term of service of the legionaries to 20 years.

The Codex Justinianus (12 35.2) mentions: "if you have completed twenty years' service, sordid military fatigues will not be imposed on you," which hints at the military service being longer than 20 years. There is epigraphical evidence of soldiers serving 21 years, 22 years, 25 years, and 26 years. Tacitus reports that men still served in the army for 30 year and 40-year periods, as does the inscriptions from Virunum in Noricum, belonging to cohors Montanorum prima, which records 30 years' service, 36 years, and 40 years.

I am baffled as to how some academics, well, nearly everyone I have read, has settled on 25-year service as the standard. Is there some reference I am missing that I need to know about, or is this period of 25 years, just the new belief system?

Your help would be appreciated.

Marcus Brutus20 Sep 2025 3:14 p.m. PST

The Codex Justinianus is from the 6th century. What does it have to do with military service in the Principate of the 1st century? I know nothing of the dates you mention above of 16 and 20 years respectively. What are you citing?

The Trojan20 Sep 2025 10:21 p.m. PST

You have to ask Duncan B. Campbell as to why he put the Codex reference in his paper relating to the principate. It would be wrong of me to answer for him.

Marcus Brutus21 Sep 2025 2:25 p.m. PST

I have no idea what you are talking about Trojan. I do know that both Adrian Goldsworthy in his book on the Roman army mentions 25 year terms for legionnaires in the period under discussion. The Wikipedia page on Legionary confirms 25 year terms. Do you have original source material that disputes this?

robert piepenbrink Supporting Member of TMP22 Sep 2025 12:25 p.m. PST

Marcus, Trojan there is referring to primary sources--Tacitus and the C.I.L. You're the one citing two secondary sources.

I'm just an old horse & musket player. Would any of you Ancients people care to cite a primary source for the 25 year service period?

The Trojan22 Sep 2025 6:47 p.m. PST

Marcus Brutus wrote: I have no idea what you are talking about Trojan. I do know that both Adrian Goldsworthy in his book on the Roman army mentions 25 year terms for legionnaires in the period under discussion. The Wikipedia page on Legionary confirms 25 year terms. Do you have original source material that disputes this?

From my interactions with you, it has become quite clear you gleam your knowledge about the Roman army from modern sources. That can be precarious road to travel. When reading Adrian Goldsworthy, he should provide a footnote or endnote citing the ancient source (Tacitus, Paterculus etc). If a historian does not provide such information, you can be assured it will be some theory developed academics.

In 13 BC, according to Isidore of Seville (Etymologica 9 34), Augustus decreed all legionaries must serve for 16 years and all Praetorians for 12 years (Cassius Dio (54 25 6), Tacitus (Annals 1 17-19 & 26), ILS 2649). In 5 AD, according to Tacitus (The Annals 2 80), Augustus lengthened the term of service of the legionaries to 20 years. Cassius Dio (55 23 1); (57 6); Res Gestae 3 17; Tacitus (Annals 1 78)

A papyrus concerning some Egyptian veterans of Legion X Fretensis being discharged mentions the soldiers "conducted ourselves over twenty [years] in ever respect as good soldiers should".

The inscriptions from Virunum in Noricum (EDCS-22300520), belonging to cohors Montanorum prima, records the following:

CIL iii 4846 Ti. Iulius Condolli f. Capatius 30 years service
4847 Ti. Iulius Adesdi f. Taulus 36 years service
4844 Ti. Iulius Adgelei f. Buccio 40 years service
11554 Ti. Iulius Giamilli f. Sextus 40 years service

The 16 years' service and then 20 years' service for the principate are divisible by batches of four men, so the system Polybius is describing appears to be still in use.

When civil war erupted in 69 AD, Tacitus (The Histories 82) writes that the first business of war was to hold levies and to recall the veterans to the colours. After a legionary has served his military term of service (16 years or 20 years), when discharged from the army, a legionary was still required to remain under the standards (eligible for call up). The writings of Cassius Dio, Paterculus and Tacitus provide references to veteran soldiers and veteran cohorts accompanying the army or acting independently of the army. (Cassius Dio (55 24 8), Paterculus (2 110), Tacitus (The Histories 4 21). In 69 AD, during the Roman civil war, Tacitus (The Histories 83) has Mucianus marching with the 6th legion and 13,000 veterans. Tacitus (Annals 3 21) gives a detachment of veterans (vexilla veteranorum) at "about" 500 men. For the campaign against the mutineers in Pannonia in 6 AD, 10,000 veterans and 10 legions (48,000 men), were levied. Paterculus (2 113), Tacitus (The Histories 2 18) mentions 1,000 reservists.

Therefore, the common citation of 25 years' service may thus be a summation of 20 years active service plus 5 years in the reserve (veteran status). So, if a historian claims 25 years' service, that historian should explain it as 20 years' required service and 5 years as a reservist, which means although discharged, he can be called up again when need during that five-year period as a reservist.

There is no ancient source that states a legionary must serve 25 years. There is also evidence that the legionaries during the period of the principate were also still being conscripted.

Marcus Brutus24 Sep 2025 10:22 a.m. PST

After 20 years of service a legionary would receive his honesta missio. We might translate that as an honourable discharge. He was now a veteran. He was expected to serve five more years with lighter duties and then he would be dismissed from the service. That adds up to 25 years.

The Trojan24 Sep 2025 5:18 p.m. PST

It is not clear whether the reservist period for a legionary was five years. The length of service was 16 years then increased to 20 years. That is an increment of four years, which could indicate that the period as a reservist could actually be an additional four years. Also, there is no evidence of every reservist being called up. So, actual legionary service is up to 20 years.

Marcus Brutus25 Sep 2025 5:53 a.m. PST

During the Principate service in the legions did not end at 20 years. It changed at 20 years. Why do you suppose that 20 year veterans left the legions at this point? I have seen nothing to suggest this. The veterans stayed with the legions so there would be no official call up. After 25 years the retirees were given to their full discharge bonus.

The Trojan25 Sep 2025 8:06 a.m. PST

Well, then provide some primary source evidence. That means not secondary source evidence taken from modern historians. Otherwise, all you are providing is an opinion, which is the lowest form of knowledge.

Marcus Brutus26 Sep 2025 12:14 p.m. PST

Provide primary source evidence for what exactly?

The Trojan27 Sep 2025 5:04 a.m. PST

Provide primary source evidence for the claim you make, otherwise, just more of your opinions.

Marcus Brutus29 Sep 2025 11:00 a.m. PST

Specifically, what claim of mine are you disputing?

Sorry - only verified members can post on the forums.