I don't have the ROE cards anymore, but generally there was a 'wartime' and 'police or peace keeping'
In war like operations you'd still follow the rules of war, but generally you were shooting first to take objectives, there was a lot of latitude.
In peace keeping and non warlike, everything was about a force continuum.
- Ie we will patrol with weapons slung over our shoulders, with the weapons at 'action' (cocked but safe) and hands by our sides.
- If things change we actively patrol with our weapons (Still at action)-
- then you get to pointing weapons (action)
- cocking weapons (for direct crowd control, kinda silly because you lose a round at with this action but it makes the point you ain't stuff about)
- Then there's pointing with safety off, and closely followed by firing at people. (A lot is happening to get here in 'police' or 'peace keeping' scenarios)
Also our ROE had specifics such as, if your are engaged by IED or Ambush you can fire when fired upon but you can't fire at suspected targets (Like anyone on a cell phone), you have to confirm the threat. Which is pretty reasonable but in war like operations you may just fire at positions of cover because there could be enemy waiting there and you're generally trying to suppress an area. You don't want to do that in a heart's and minds kinda fight.
Anyway, I can't remember them all and they have probably changed over the last decade. But those are the main points and generally we didn't make the first move. we just waited.
I remember being shouted at by some kids and young guys for like an hour and just waiting them out. It was very frustrating but my rifle and grenades would have just created bigger issues.