I just finished "Caesar's Legion", the history of the Tenth Legion, and it makes several points about recruitment of Legions that are contradicted in "Under the Eagle", Scarrow's first novel. For instance, legions were recruited all at one time, in one location, and all the recruits were of the same age, 20 years old in the mid-First centry A.D. The term of enlistment was 20 years and the recruit signed a contract with the State that specified the pay, bonuses, and pension--- land granted to the veteran upon completion of the 20 year enlistment.
Legions did not add new recruits unless they had been virtually wiped out, which happened infrequently. Casualties were generally not replaced with new recruits, and a legion would simply get smaller over the years through attrition. So, after 15 years or so, it wasn't unusual for a veteran legion to number 2,500 or so versus its original strength of 4,800. In other words, there wasn't a steady stream of replacments to replace casualties.
Last night, I enthusiastically started to read Under the Eagle and was immediately turned off by the historical inaccuracy of the manner in which Cato came to become part of the second legion. A convoy of 200 new recruits arrives at the fort and they include convicts who chose military service over imprisonment. First, recruits were not added in that manner unless on a wholesale basis after a major disaster. Second, I believe convicts were not eligible to join because they would have been deemed undesirable by the reruiting officers. Third, They would have been all from the same location and the same age. Also, a recruiting class would have received equipment and training in the recuiting location and would have trained on the march to join the legion. This happened when a legion's enlistment term expired. It was common for many of the legionnires to reenlist for a second term and remain with the legion. The new recruiting class would march to join them. So, in these cases, the legion would have two age groups -- 20 year-olds and 40 year-olds.
However, as I kept reading I became involved in the story and am enjoying it. I'm wondering if I can expect other literary liberties to be taken for the sake of the storyline. Or, is it mainly historically accurate? I read all of the Sharpe novels years ago and am looking forward to ripping into this series depsite the initial turn-off. What can I expect?

