I've discovered hostile Rakhas on a planet I'd really like to occupy myself, so they must be crushed. I'd rather not mess up the local real estate so I want to keep orbital strikes to a minimum. Therefore I'm left with designing a ground force that can clear them out. My overall doctrine is as follows:
Troop Transports: Regimental transport: 25K capacity
Battalion size: 5K total: 4K combat, and a separate 1K logistics company
Battalions 1&2: Infantry screening units. (4000) Frontline defense All infantry has heavy powered armor.
640x PW
6x LAV
2x LAA
6x LB
42x CAP
2x HQ (4,000 capacity) noncombat
Battalion 3: Medium tanks - VEH with medium armor (3978) Frontline Attack
61x MAV/CAP
2x FFD/HQ (4,000 capacity) noncombat
Battalion 4: Heavy tanks - HVH with heavy armor (3976). Frontline Attack
36x HAV/HCAP
2x FFD/HQ (4,000 capacity)noncombat
Battalion 5: Regimental HQ and artillery (3934) Rear echelon
23x VEH HB/HB medium armor
2x HVH FFD/HQ (25,000 capacity) heavy armor noncombat
1x VEH CON/CON (noncombat)
5x supply companies (992) support or rear
16x LVH LOG
My invasion doctrine assumes I will have aerospace superiority so I only have token Anti-air capacity and no STO.
My questions are as follows:
1) Is my order of battle reasonably balanced? On a tonnage basis I have a 1:1 ratio of screening infantry to armor, and a 4:1 ratio of basic infantry to specialists. Should those ratios be substantially higher/lower?
2) Do I need to include the logistics companies within my HQ capacity? Re: should I reduce my regimental HQ capacity to 20K or add another battalion?
3) My default logistics support is about 5 GSP reloads for combat units - is that sufficient?
4) should I include a command vehicle in the logistics companies? If so should I merge them into 4-5K battalions?
5) should I break the artillery into a separate 4K battalion with a HQ unit and have the regimental HQ and constructor unit be its own company?
6) Do logistics companies need to be designated as "support" or should they be rear echelon? If so I'd have nothing in the support echelon. Also should I be holding my logistics companies in orbit and dropping a few every day as they are used or are they relatively safe in the rear?
6) The terrain type is "Coniferous Forest" (0.03 Oxygen, 47% hydro, temp range is -13 to 17) - is that equivalent to Taiga for a fortification multiplier of 1.25? If so the actual tonnage should be about 4x the observed tonnage of 2,200t or 9Kt. Assuming tech parity would landing two regiments for 5x of the actual tonnage give me a reasonable chance of winning?
In case it matters, TN start but I'm still fairly early game (20 years in, 30cm plasmas and composite armor so racial armor 8 and weapon 10)