On Reflagging

[3catcircus]

As part of my current research into what would have happened when the 5th Infantry Division had been inactivated in 1992 and then the Twilight War happened, rather than staying in service as per the 1e/2e timeline, I've been having some difficulties tracking what happened to subordinate units.

Anyone know if there is a resource that tracks activation, inactivation, and reflagging of individual regiments and their constituent battalions?

Anyone know why combat aviation brigades often had one attack battalion instead of two and separate support and assault companies rather than a general support battalion as per the TOE?

Does anyone have access to a complete current series to&e? I'd also be interested in seeing what a pre-BCT division would look like with modern equipment. For example - when they shifted to the BCT structure, they went from something like 58 M113s in a mechanized infantry battalion to something like 44 M2s. Would the quantity of M2s change back to 58 in a j-series structure or would it change regardless of the change to the force structure?