Kampfjaeger, hi there.
Bag one: sleeping items; usually bivi bag and sleeping bag.
Bag two: eating and personal hygene kit; cooker, set of mess tins, KFS, main meals, salt pepper and oxo cubes, washing shaving kit etc, and often an extra canteen of water.
Bag three: dry clothes and trainers.
Bag four: gash bag for all the rubbish.
Bags need to be fairly robust and not just bin liners. My bag one was an oversized compression sack.
Items are packed individually as you like but always go into their respective big bag. The four bags go into the bergen main compartment. If the weather is foul then first into a water proof bergen liner. Its rare to have more than one bag out at any one time. A bag always goes back in the bergan even if its going to be used in a minute or two.
The only other items I attach to the ouside or in a pocket are those items that are always being used. Maps, compass and bog paper, waterproofs, snugpack thermal jacket, sleeping mat, and basha (axe and digging tool). If not actually being used then back on the bergen.
Its bags into bags really. The best part is at night when you need to leave in a hurry

It also means you don't have your camp area covered in kit that is not being used that moment and waiting to get lost or get wet. A disciplined camp area makes life easier. When well practiced you can find things by touch alone.
Now with bog paper in hand, where has that digging tool gone?
