Policing as you use the term is used to imply coercive force on an occupied people.
There you go, you libertarian you. Always assuming the worst. Yes policing can be employed as coercion of an occupied people. That however is ultimately a self-defeating strategy IMHO. No government can long stand against the will of its people, or words to that effect. I rather see policiing as a necessary tactic in a troubled community where there are disruptive elements that prevent ordinary folks longing for the simple life (apologies to Paris and Nicole) from going about their daily commerce.
Most folks will support a government if the government can give them security and prosperity, no matter how corrupt they are.........
Policing is part of giving them that security.
Policing by the army is necessary when the disruptive elements are well armed and organized though in the minority and not enjoying the support of the majority. If they do enjoy the support of the majority then the army may as well return to barracks because the government has a lot more work to do on the suasion side of things.
You are right to be suspicious of the dichotomy between foot/urban-mounted/rural. I use this only as a starting point based on historical realities and still true in "ancient" cities where cities are "pedestrian friendly" or not vehicle friendly. Dispersed garrisons (police or army) of soldiers or police on foot are suitable there. In modern cities that are vehicle friendly then small patrol vehicles (RCMP cruisers or CLVs) are appropriate as they are in environments like the prairies, or Europe or areas of countries like Iraq that are well served by networks of roads. Just like the interface between country and city is broadening and the border has moved from the well-defined city wall to the ever decreasing density of the suburbs so the zone that wheeled cavalry can patrol and control is ever increasing.
But cavalry was also responsible for patrolling the areas that roads weren't. The horse was particularly useful in those locales as well both for carrying small patrols as well as for large rapid intervention forces.
By necessity the horse was a mult-functional platform. Moreso than the chariot.
Wheeled cavalry resembles the chariot in utility having both utility in patrol and the assault on suitable terrain. Tracked cavalry can be likened to any of the heavy assault forces of history. So what is available to handle the patrolling abilities of the horse soldier in rugged terrain? Anything else driven by horsepower? Trucks, ATVs, Helicopters, Aircraft, Boats, Ships, Hovercraft.....? Any platform that allows the soldier to cover large distances rapidly, but also to endure for extended periods of time supplying presence?
From there is it much of a leap to seeing the entire modern army with its emphasis on mobility as a cavalry force? As a manoeuvre force?
The M1 is a lousy vehicle to police the countryside. It needs roads and railways to get it to the scene and over which to move its fuel, tracks and other spare parts even if it doesn't fire a shot and have to be re-ammoed. The roads and bridges in the Balkans were often too weak, low or narrow to support the M1 constricting its range of movement. Its need for fuel really limits its range. It is great assault vehicle. It makes a marvellous relocatable pillbox. It is a lousy patrol vehicle for the many spaces far removed from road networks.
I do think that we should equip for war. Full stop. Agreed. I also think we should train for war. Again agreed. I think that the reason that the military needs to be employed in policing in intransigent or disputed areas is precisely because they are equipped and trained to employ violent means and lethal force in support of the government of the day. As important they are disciplined and courageous enough (there's a funny word in this day and age) NOT to act violently and lethally until told to do so. If the enemy is a large state with a large force than the army needs to be able to concentrate sufficient breaking power against that mass as to discourage the activity of the enemy combatants. These days that does not necessarily require matching them soldier for soldier, tank for tank, aircraft for aircraft. If the enemy is a mob of heavily armed insurrectionists then the army needs to be able to concentrate sufficient breaking power to eliminate that threat and convince or coerce them into seeing the error of their ways. The issue is not one of disagreeing on the need for "concentration of forces". It is the next one on the list "economy of effort". That economy of effort not only includes manpower and ammunition, ultimately it includes dollars as well.
How about this for an option? I will stipulate the need for the M1A2 TUSK - a marvellous piece of kit without doubt. But how about, instead of buying two TUSKs with two crews we buy one TUSK and 4 Patrol Vehicles with 5 crews for the same dollars. Keep the crews together and rotate them through the tasks.
That would put expenditures into the same range as your ancient Mongols, my border reivers or the French knights at Agincourt - all of whom tended to travel with not a single horse but a string of horses. The armoured knights only had one or two warhorses capable of carrying them into battle. They generally rode lighter riding horses most of the time, the same type of horses used for patrolling.
Historical analogies aside.
The period we have entered into is one of declining risk of government to government clashes, the costs for all parties is just too high. At the same time central authority is being challenged all over the place and the need is for authority to reexert itself. The threat is not concentrated. It is dispersed. It is not heavily armed, nor compared to a professional military, is it particularly well trained or equipped to slug it out with a professional military. The dispersed threat demands a dispersed, or at least a highly mobile rapid-response capability. The lack of concentration on the enemies' parts and the relative low weight of fire that they can produce allows for smaller units to be fielded to counter them. You yourself, and others, have argued this very point, speaking approvingly of the US Marines move to a small unit unit philosophy dependent on lower rank competence.
The army needs to prepare for war against a concentrated force, absolutely, but right now there is a demand for forces to exert control over smaller, less well equipped forces operating over vast distances. Both requirements have to be met.
And by the way, I will also stipulate that in uncertain situations it might be appropriate to lead with an M1A2 TUSK to figure out what is going on. On the other hand a swarm of Micro UAVs with sound, heat, radar and optical sensors might also generate a useful picture.
Cheers.
PS - Made in Canada is a poor rationale for buying kit if that is the only rationale. On the other hand if it is good kit and gets the job done, at a competitive price, I am all for it.