Obviously technology is related to how combat formations are structured.
Does technology become available to enable less troops with more combat capability,
or
as the forces are reduced in size they require more technology to retain their combat capability?
It seems to me that study of history will show the Western practice since 1930s to have been dominated by dependence on the political considerations, budgetry restraints, shortage of personnel and nuclear weapons.
Then there is the larger commercial environment which did not exist in the Communist countries. DoD providers in free market economies need to make a profit. It is in their interest to sell the most profitable product, and this is suplemented by 'value adding'. This was as true in Germany of WW2 as it is in US today regardless of differences in society and political systems.
Is the M-1 and effective tank because it can engage targets at 4000m? No it is not, because the engagement distance is limited to very rarely occuring terrains. So what makes it effective? It seems to me the effectiveness is in ensuring crew survival, because it is this 'commodity' which is scarce. Just like Germany, NATO armies have a deficit of personnel, and therefore designs need to preserve whoever is available because training replacements during Cold War scenarios was not an option.
The Soviet tanks only claim a 3000m effective range. However their design retains 4 personnel for the tank (as opposed to 6 for the M-1), retains relatively same PWR, and fuel consumption, and adds an increased, and more importantly sustained rate of fire. Moreover they retain an excellent hulldown capability so important in tactics. Curiously I have been told again and again that this design precludes gun depression which is somehow crucial to tactical success, but of course that is why the Soviet tanks also have gun-tube launched ATGWs. These can be launched UP to be guided down for a top attack.
And so we have the M-1, a true successor to the panzers, stuffed full of wonderfull enabling technology. No longer defending Germany and its NATO standard bridging (with signs), it faces terrains of the Third World where even recently built roadways are likely to be built with substandard materials by unqualified contractors. And to get to all these places so that democracy can take root, the US DoD needs lots of fuel. All sorts of fuels in the last decades of the oil era.
Just like there are all kinds of bridges, there are also all kinds of deserts. The deserts are not uniform in their terrain features. Nor do deserts form a large or significant part of the globe's surface. Most deserts are of no interest to militaries because they are uninhabited, lack resources and are a logistic trap. Even the desert in Kuwait and Iraq are not so uniform as to afford unrestricted and constant 4000m visibility. If they were, would the AH-64s have been sent in to initiate operations in the night?
Are you saying that for example the XM-1 was designed with desert terrain in mind? I suspect not. It was initially a US-German design project for defense of Europe. The fact that the M-1s ended up being used in a desert does not justify a design that seeks to achieve a 4000m target acquisition. I need not remind you why the M-60 was never sent to Vietnam
The M-48 could not be improved for that combat environemnt. Still, someone sold the US Army the M-551s
So what will the future brigade look like? From the various future technologies online sites they are likely to be complex, expensive, and even fewer in number. In a developed world short of labour, finding service personnel is going to be a difficult and expensive task, and the designers are undoubtedly even now thinking about the perfect tank
Cheers
Greg