system
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human
[Halo] How does the Covenant's manufacturing and supply lines work? Where do they get their food and ammo and supplies?

FYI I haven't read any of the books, just played the games.

Do the Covenant have planets where they grow their food and build their ships? Is it all on High Charity? If it was all on High Charity, how did the Covenant not starve to death after it fell to the flood?

Supplies are the lifeblood of an army and a war, so how do the covenant keep it going?
gpt
The Covenant had a pretty massive empire that spanned a lot of the Orion arm before they found humanity. We don’t see a lot of it because we were on the defensive for basically the entire war but they have their own colonies, factories, economies, etc. that they’d been building since the Romans were figuring out how to build arches. We’ve sort of seen some of these like K7-49, which was an asteroid converted into a refinery near human space the Covenant built, and Osiris goes to Sanghelios (the Elite’s homeworld) in Halo 5. A lot did come from High Charity though, so losing that would still have been a huge blow even if their government hadn’t crumbled at basically the same time. 

A lot of their ships were also pretty big and fairly capable of sustaining themselves. Some of their carriers for example had their own nature preserves inside. For bigger operations they also had massive mobile battle stations like the Unyielding Hierophant that could supply and repair hundreds of ships. Truth was secretly going to use one to invade Earth with a fleet of upwards of 500 ships, but Chief and friends taught them a lesson about the dangers of overloading pinch fusion reactors before that could happen.