I'd love to update or correct my understanding of tanks, artillery, HIMARS, aircraft carriers, cruisers, littoral combat, submarine classes, F-22, F-35, AWACS, etc.
https://www.matrixgames.com/game/armored-brigade
Armored Brigade is probably a good start. 4 minutes for artillery to aim, 1 to 2 minutes for shells to actually arrive, 10 minutes for air-support to fly in.
1 to 2 minutes to deliver commands to any particular squad (depending on how good their radio contact is).
Roughly realistic levels of arms, armor and penetration. Angle of shots and type of weapon (kinetic energy, such as APFSDS, or Chemical energy, such as M47 Dragon or HEAT rounds) are factored in.
Guided missiles, top-down missiles, fire-and-forget missiles. Etc. etc. Its not every weapon, but its a solid set of important weapons that probably cover a wide variety of possible combat situations.
Line-of-sight is simulated on an incredible degree: height maps matter, but so do trees (partially obscured), houses, and smoke grenades even. Line of sight is best at 12noon. Line of sight is worst at night, unless your squads are equipped with thermal vision. Weather (foggy conditions especially) can change things dramatically.
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The simulated soldiers/tanks aren't the best, but they're smart enough to run away during artillery barrages and hunker down. They'll seek cover on their own (and if you tell them a direction to defend against, they'll look for cover on their own too against that direction). Tank commanders "button up" during enemy fire (reducing their vision but likely saving the commander's life). Covering fire is therefore effective.
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The AI is okay. The AI runs into traps and ambushes, and never really figures them out. Still, good enough to get you the basics of strategy of each of these weapons.
Seeing the 3000m range of a tank vs the 150m range of a M72 LAW really demonstrates the bravery that those unguided anti-tank bazooka squads have.
[1] https://store.steampowered.com/app/1502380/Combat_Mission_Bl...
[2] https://www.youtube.com/channel/UC9egpHJiRis89uHkeyJiEug/vid...
For armor, Chieftain is probably as good as it gets in English when it comes to universality (he's both a historian and an active service Lt.Col. in the US NG).
For further armor sources, I'd highly recommend the YT channel of Tank Museum Bovington: https://www.youtube.com/user/TheTankMuseum
The chap whose video Chieftain replies to ("Perun") is worth following in his own right for the modern take on Russian / Ukraine war. He's more of an economist / logistician, but well worth watching:
https://www.youtube.com/channel/UCC3ehuUksTyQ7bbjGntmx3Q
From Perun You'll often hear the name "Michael Kofman". He doesn't get one single place where you could find all of his stuff, but google him and go through the articles / videos he is in. He's often used as a source for quite a lot of commentary about Russian Army in the past 20 years or so. https://russianmilitaryanalysis.wordpress.com/
When it comes to general doctrine, it's sometimes useful to know the compositions of forces. This is a good starting point: https://www.youtube.com/c/BattleOrder
When it comes to modern navy, Jive Turkey (now called "SubBrief") is probably a cool starting point. Mainly submarines (he's an ex US Navy 688 sonar operator), but : https://www.youtube.com/c/SubBrief
https://www.youtube.com/watch?v=AKewF8_SiIs
The short, short, short version is that the Russian BTGs (battalion tactical groups) and undermanned in general, and the conscripts are supposed to be filling most of the infantry slots. Theoretically, because this isn't a declared war, the conscripts aren't supposed to be fighting, and weren't sent to the "special military operation".
I enjoyed watching all the Ukraine war videos on that channel.
If You like Perun and want to dig a bit deeper, try checking out Kofman's articles / videos. He's used quite often as a source (and with quite some reverence) by Perun and others.
Here's one from 2019 where he basically says what everyone figured out in 2022: https://www.youtube.com/watch?v=5UktY0XePs0
Beware, it's not the best presentation, but his public speaking skills have seriously improved since ;-)
Here's a panel he did with West Point right at the beginning of the invasion, if You'd like to check how his stuff holds up (Col. L. Collins is a good one on his own as well). https://www.youtube.com/watch?v=zXEvbVoDiU0&t=2378s&ab_chann...
I think the closest to what you're looking for is FM 3-96 the Brigade Combat Team (https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN31505-FM_3-9...). The is the smallest unit that includes effectively everything the Army can bring to bear, including infantry, armor, artillery, and rotary aviation. There might still be some fairly specialized intelligence, surveillance, and recon assets only available to divisions, but most of what the Army can deploy for fighting purposes exists in the BCTs at this point. I imagine other branches of service have their equivalents in terms of doctrine on how to employ submarines and fighter jets, but I only ever served in the Army and am most familiar with their tactics and doctrine.
https://acoup.blog/2022/05/06/collections-when-is-a-tank-not...