Things to do in a Grand companies.

I have just unlock the Rank of chief serpent Sargent in my GC. But the problem is that I clicked though the text after that said what had opened up for me without reading it. ( I was half asleep.)

So my question is what is now available for me to do? Is it just more GC Leve? Because I once read about something called Hamlet defence and caravan security but I can not find anymore information about them.

Any help I can get would be appreciate.

Those two events are old 1.0 events that are no longer in the game. Pretty sure you just have more of the same. The only GC content currently is the GC hunting log, FATEs, GC leves, and supply & provisioning missions.