NORG and it's crucial importance to the Ghost Recon franchise.
I'd say generally for every game out there and more specifically in the case of tactical military shooters, REALITY is usually the best (and it could be argued, only) place to go looking for answers to your game design questions.
Just found it out myself today but, devs behind Ground Branch (one of whom was involved with the OGR) formalized this idea into a game design philosophy, referred to as NORG:
Natural Order of Realistic Gameplay (NORG)
A legacy term originally coined by "Hatchetforce", a retired Special Forces Operator who contributed to the early start of Ground Branch. He defines the Natural Order of Realistic Gameplay (NORG) as a doctrine or concept surrounding the design and development of realistic tactical/military simulation games. Some arguments about the clearest definitions of NORG exist, and Tactical Operations Center has their own definition of the NORG philosophy, which it is shown below:
Natural Order of Realistic Gameplay 2019+ (NORG2019)
The Natural Order of Realistic Gameplay mandates that the player consider every action taken in-simulation with the same weight, and consequence as one would in-reality. The situation in-simulation is, and should be throughout, an experiential journey of applying real-life consideration to an otherwise digital experience; the goal of which is to set a high standard for realism during the active operation of said simulation; asking reflectively 'would I do this in reality?'.If the answer weighs heavily towards the negative, then the act should be avoided in lieu of an answer in the positive.
What NORG is...
is a philosophical framework that supports realistic consequential forethought toward any action in-game
provides a system for checking how 'realistic' the current state of play is, and when possible, enhances it
reinforces the notion that being 'realistic' in-game, is a positive mentality that encourages immersive play
Pro-Norg Examples
Situational: 'this door may conceal several well-armed hostiles awaiting my entry, what would real-life troops do?
Logistical: 'this equipment might be too heavy, or inappropriate for the mission. What would real-life troops use?'
Physical: 'this terrain requires careful navigation to avoid enemy detection. How would a real-life squad travel?'
What NORG is not...
a hard and fast set of rules that govern player actions, rather it is a manifesto that is flexible in its application
a dogmatic set of principles in which to judge another player's adherence to realistic gameplay via discussion
a cure-all for reality:simulation equations; some things when applied in a game, do not successfully translate
Anti-Norg Examples...
Situational: 'I'll just open this door and run in guns blazing, I can always respawn later. It's a game, afterall...'
Logistical: 'My fireteam benefits from everyone taking 'the best' guns, rather than considering what troops do'
Physical: 'Jumping around and dodging using crouch is perfectly fine, it gives me an edge over the enemy...'
https://unofficialgroundbranchwiki.com/getting-startedl.
Here's a pertinent video from a creator whose approach to historical, immersive and fairly ARMA3 content, serve as a fine showcase of what could be achieved through the application of these concepts.
For the record, I know GR isn't ARMA, however the "spirit" or "animating force" driving both franchises used to be one and the same.
Bit ranty up to the 9:45 minute mark where the actual analysis begins:
https://www.youtube.com/watch?v=t-m8dFMaMAg&t=1308s