Alright then. A flotilla of Venators carries:
1 walker battalion (presumably AT-TEs, they seem to be everywhere) (72 walkers)
120 gunships (maybe 10 squadrons of 12 each? It divides itself better now, 5 squadrons to each regiment)
2 infantry regiments (5,300 troopers)
That seems a bit gunship-heavy to me. But then again, I suppose they are the reaction force.
Now that you've brought Acclamators up though, I'm curious to see how 3
Acclamators compare.
Walkers:
144 AT-TEs which equals 2 armored battalions (72 each).
108 SPHA walkers which equals 3 artillery battalions of 6 batteries each with 6 guns. (3*6*6=108) (Yes, I had to get away from the 4x4 organization for this one, but for some reason artillery tends to congregate in batteries of 6 guns each, and the numbers didn't seem to want to fit using a 4x4 organizational scheme.)
Gunships:
240 gunships in 20 squadrons of 12 each.
Scout bikes:
960 bikes. Going to steal from the
Imperial order of battle: 5 bikes per squad. That means there are 192 scout squads, with 4 per platoon for 48 platoons. With 4 platoons per company that gives us 12 companies. 4 companies per battalion leaves us with 3 reconnaissance battalions.
Troops:
48,000 berths available for troopers and support crews. Since it worked so well in the Venators, where each regiment filled approximately 3,000 berths, including support personnel (tank drivers, gunners, LAAT pilots, etc) I'm going to use that here as well. 48,000 berths fits 16 regiments of infantry. That is one whole legion/brigade.
I'm going to make an assumption: If this is how many of each unit that a flotilla of Acclamators can carry, then wouldn't it make sense to assume that this is the standard make-up of a Brigade?
2 armored battalions
3 artillery battalions
20 gunship squadrons
3 reconnaissance battalions
16 infantry regiments
plus support troops