Check out these previous answers while you're waiting:

• Roman Soldier's Diet by /u/GBFel

• How did foraging and pillaging for supplies work in the early & late Roman periods? by /u/HatMaster12

• What did the Roman Legion's diet consist of? and What was staff work like for the Roman Legions? Was there a central military bureaucracy? by /u/Celebreth

• How did the roman armies stay supplied with food and equipment while on campaigns far from Rome? by /u/Drdickles

• How were large armies on large forays supplied with food and fresh water throughout history?

For answers about ancient armies in general, check out:

• How did the giant armies of ancient times eat? by /u/Tiako and /u/Bomb-20

• Water supply in an ancient battle by /u/abt137

• How did generals feed huge armies in the field in ancient and medieval times?

• How did classical armies get food? by /u/LegalAction and /u/400-Rabbits

• How did ancient armies manage to provide food for massive armies over long campaigns?

If you're interested in ancient army logistics in general (not just Romans either), /u/Searocksandtrees put up a list of past threads in How did the Roman Empire supply their army during a long campaign?