Mechanised units for the Astra Militarum

This winter I will work on my Astra Militarum army among other things. One of the things I will do is paint up my armor. I hope to paint up quite a lot of infantry units too, as I have at least one box full of troops and heavy weapon teams.
I've done a count of my assembled units, and I have 9 Leman Russ tanks of different variants that is either patially painted or primed (10 if I count the tank that is supposed to be done, if it isn't too thick with paint I will re-do it yet again, if not it will be as is).
I would like to make unit markings on my tanks as I want to give them a place in the larger army and field them as companies if I ever get to take place in really big battles. So I have thought out a way of marking the tanks with both squad and company markings, and I believe I have found a way to do it.
The plate that the turret is connected to is sort of a raised ring on the hull, and I like to paint this in another color than my tank. Both to get more color on the model and to build up some contrast. I will also see if it looks ok if I paint the side armor on the turret in the same color.
I will use Averland Sunset (sort of matte yellow) on command vehicles, Khorne red on one squad, Caliban green on number two and Administratum grey on the third squad. This will then serve as my squad markings. Then I will paint three vertical stripes (one of each color) on the side of the tanks near the front, and use that as company or regiment markings. I might make it regimental markings as I don't think I will manage to make up too many different combinations that will loook good on the tanks.

One of the Leman Russ tanks is a Vanquisher with Knight Commander Pask in the turret. In my army he will be Colonel William Tecumseh Sherman, the commander in charge of the entire 2nd Armored Regiment. His turret will have a yellow ring indicating command, and then I will add some sort of units to follow him as escort. I will have to figure out what kind of vehicles it should be, but at the moment I'm thinking at least one tank and one or two Chimeras with troops and command.
I plan on  modifying two figures to serve as my majors as I would like to have them to have the same uniforms but different heads. I'm not sure if they will ride in tanks or a command Chimera, but I will figure that out eventually, so that wen I am done both Majors Jobal Early and James Ewell Brown Stuart (in dayly life called Jeb Stuart) are represented on the battlefield.

Before my army is done I plan to have 9 more Leman Russ tanks and a command Chimera to make up my second tank company, and then I need the vehicles that will ride along with my Colonel in his command squad. But this is a long time goal, not something I plan to do this winter. I think I have a few more taks unbuilt in storage.

But the army is not just built up of Leman Russ tanks. They have a company of Super Heavy tanks, and this is just called  the 1st Super Heavy Tank Company and they are under the command of Major Winfield Scott Hancock.
At the moment he has three super heay tanks at his disposal, a Baneblade, a Shadowsword and a Hellhammer. The Hellhammer is equipped for urban fighting, and has four side sponsons instead of the regular two.
Major Hancock has ordered another Baneblade, and is told it is on a transport, and hopefully it will reach him before the Walpurgian 3rd Brigade reaches their next conflict area.

I have built one command Chimera to go along with my Leman Russ tank company, and I will build one more almost identical for the second company. I will also need some command vehiles for Colonel Sherman, but they might have a different configuration.

The 56th Artillery Company under the command of Major Belle Boyd haven't got too may vehicles done yet, but I am quite sure I have a finished Basilisk in storage or in the display case. If so I will bring it back to the desk and make sure it is painted up eactly like the other armored vehicles.
I do have both Basilisks and Wyverns in storage to be built, and Deathstrike/Manticore launch platforms too...

The support company under the command of Major Joseph Eggleston Johnston have some of their vehicles ready too. I have one Hydra Flaktank that only needs some wethering and unit and company colors before it is ready for action.

This company also have all the Hellhound variants in the Regiment, and as of now they have 4 of these to use. One of them just need a touch-up on the paint to get the right colrorscheme like painting the turret black instead of Mechanicus Standard Grey (if I find that looks good), company markings and so on. The other three are all sprayed Mechanicus Standard Grey.

With time this company will administer the Chimeras that are used by the two Infantry regiments (the Walpurgian 25th and 27th) and the Abhuman regiment (they get the vehicles the other regiments no longer want to drive in, so when I paint them up they will get more rust and grime on them).