The ban at this point will be up soon, but I will comment on your past offenses as I was in command of CG at the time and have some recollection of them.
You were considered a minge who had No Intent to seriously play the server, and your attitude for your arrests today (last night) showed, with little to no change to your behavior and how you interact with the server and the privileges you can earn. Many arrests for RDM, Button Abusing, Trespassing and the Intercom Abuse... which is a lot out of the 21 bans on record. Personally, I think you knew what you were doing and you wanted to exploit it once again, but in a new light being in a battalion and being a SUP.
Again, not my decision, but I personally don't think you want to RP and care for the server enough to continue doing so after your ban is up. As for the discord you were "banned" from. That is up to the leadership of that battalion, in this case the 501st Command Leadership are the ones in charge of that, not the server staff.
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People in the past have been banned for NITRP for less than 4 arrests. Depends on the context.