Answer:
it ensured the soldiers would always remain loyal to augustus.
Step-by-step explanation:
During Augustus's reign in Rome,
He made use or reward as a means of securing, getting more loyal soldiers. History documented that about 500,00 Roman citizens were under military oath to Him and when their terms of service were ended, they are settled in different colonies whereby land is allotted to them or granted money as rewards for military service. Roman citizens did wanted to serve in his army for the benefits of land and money after serving.
A reward is simply positive reinforcer as it increase the numbers of occurence of repeating actions. Rewards are important if you want to ensure loyality in the Roman empire.