Mass combat in D&D and OSR

Lets be honest D&D is a power fantasy... And it always has been. The type of power fantasy may change but in essence it has always been a power fantasy. And what is more of a power fantasy than being the general of your own army, D&D had its roots in wargaming and many times have there been attempts at combining the two. From the original Chainmail system that was used for the combat engine of original D&D to the two systems TSR developed "Battle System" and "Warmachine" and even some OSR system and supplements that include mass combat such as Adventurer conquer kings and Strongholds and Followers. So I think there is a group to which such things appeal, Personally I have a background in Warhammer fantasy and 40k so combining two of my hobbies does appeal to me in some way.

So how exactly can Mass combat be done? this can be case of how abstract you want to be, the different sides are between an abstract calculation where you add a bunch of modifiers to a dice roll and then get a result that determines how the combat went and on the other end you have something closer to a wargame with units that you move about and make attacks with. There are plenty of middle ground too between to adjust to you or your groups tastes.

The abstraction method works best for concluding large scale battles quickly and clearly, and would be well suited for siege warfare and other types of non conventual warfare, this is the method used by the Warmachine system or Adventurer conquer king,

The Wargame method would be be better for skirmishes and small scale battles, the sort of things that would happen if you have a few dozen mercenary's escorting your adventuring party and roll up a 40-50 orc warband on the wilderness encounter table, simply organize the forces into units of 10 pool their hit points and attacks and then run them as one creature. Systems like Swords and Wizardry have rules for this method.

So is a Hybrid system the best approach? since both methods excel at different aspects of warfare and at different stages of the game then could using a wargame approach to simplify large groups of allies and enemy's, and then a simple calculation for large scale wars and sieges. This is probably the approach I am going to try in the near future(hopefully some of the games I'm running reach this point.) Finally there are some stuff I would recommend for 0a taste of this style of play both free pdf's, First Adventure Conquer Kings Autarch Domains at war which is an example of the first method and second Swords and Wizardry Complete which has a simple mass combat rule that is what I highlight in the second method.

ACK Domains At War; https://www.drivethrurpg.com/product/113499/ACKS-Domains-at-War-Free-Starter-Edition?manufacturers_id=4277

Swords and Wizardry Complete:https://www.froggodgames.com/product/swords-wizardry-complete-rulebook/

Let me know what you think about this subject, Any systems you like to use for mass combat I would be interested in discussing it.

M.C.