Origins of system of military lands

[Aldarion]

I am a fan of Middle Byzantine army. However, I had found indications that origins of thematic system of military lands may well go far further back into past than 7th century (if indeed field armies were given lands then). For example, limitanei and possibly even legions may have worked, or sustained themselves, from the lands surrounding their camps - so-called prata legionis. What information is there about prata legionis, and how does it relate - in terms of function, specifics and origins - to stratioka ktemata?

[caldrail]

Not with any formailty. The Romans often rewarded veterans with plots of land on retirement or disbandment - though please note the quality of land was often less than desirable and indeed was listed among the gripes of the mutinies after the death of Augustus. Late empire soldiers often worked the local farms to earn a living in the absence of military pay and some would have bought small farms for themselves and their families.