Perhaps to expand, many units have SOP's or lists for specific tasks or ops. These are generally regarded as minimums, to which you will add other things such as porn, fags and haribo.
Unfortunately, you will learn from experience what you should and shouldn't take.
you will be told to pack your waterproofs, which you will never wear unless already soaked or after the first time your Cpl calls you a puff.
you will be told to carry KFS, until you discover the delights of the racing spoon.
you will fill every pocket, pouch, nook and cranny with your comfy stuff and then be expected to carry extra section ammo, smoke, dems eqpt etc.
Mate that's just REMFesque. I was instructed to fit the sword frog edgeways between the ammo pouch and water bottle pouch. Takes a bit of modifying of the webbing, but is by far the preferred option. As The Duke said though, it varies from Battalion to Battalion.
Do the AA get issued with Swords (Bayonets) as well.