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I'm going to try to build my own vehicle strategy here. It's meant as a baseline for comparison with actual vehicle inventories. I'm fully aware that developing an actual vehicle inventory is messy, incremental, and done by successive leaderships.
The comparison is thus not necessarily a critique, but rather an attempt to make the difference between actual and optimal (or what I think would be optimal) visible.
(1) Road march and driver efficiency
Up to as quarter of the personnel of a division or brigade can be full-time or part-time drivers. Almost none of these troops would abandon their vehicle during contact and fight in effective small units. This drain of personnel strength is astonishing. Many formations have a substantially lower share of drivers, albeit 15-20% drivers is still bad enough. The trouble doubles once you assume a second man in the cabin for manning a defensive gun. This issue adds to the attractiveness of big, high capacity vehicles as you get more capacity per head.
A similar effect is visible in regard to maintenance. The maintenance requirements of trucks don't scale nearly with their nominal or average payload. Again, attractiveness bonus for high capacity vehicles.
The third effect of this kind is about column length. Both the convoy length and convoy time of passing a certain point (from first to last vehicle) should be short. A high capacity vehicle may have five times the payload of a small one, but be only about twice as long. The mandated spacing between vehicles (for avoidance of traffic issues, accidents and for diminishing the effect of attacks) is even the exact same for a car and a heavy truck.
As a consequence of these considerations, I am no fan of light trucks. A HMMWV-based vehicle park is very suboptimal in my opinion.
Many vehicles have functions which only require a 1.5 or two-ton truck's payload capacity, and the common practice is to not allocate a bigger vehicle than necessary for the job. Sometime ago I already wrote about my alternative; multi-role vehicles. A light truck with a radio cabin may be replaced by a medium truck with a radio cabin, a powered water purifier, surplus diesel fuel capacity, and a small flatbed with some supplies, for example. The overall quantity of vehicles would be decreased, and the overall quantity of drivers and gunners would be decreased.
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one ACMAT VLRA version (light truck) |
(2) Spare parts logistics
Having the same steering wheel in all trucks is a largely pointless commonality, but having the same engine spare parts (even if the engines of two trucks have a different cylinder count) or the same tires (two or three standard tire sizes could suffice for almost all vehicles) is a different story. The French had great success with their ACMAT VLRA family of vehicles and Germany had partial standardisation with its
MAN trucks as well. I am under the impression that these laudable efforts are withering away.
(3) Fuel standardisation
Most modern armies have standardised on diesel fuel, with some jet fuel for rotary aviation. This move of the 70's and 80's was a wise one, but it also helped to drive motorcycles out of the armies, and that was probably not such a good idea. Luckily, there are a few diesel engines for medium weight motorcycles available off the shelf today, so a perfect fuel standardisation on diesel fuel should be self-evident nowadays. You never know what dearly paid-for lesson the bureaucracies throw out of the window next, though.
(4) Night march capability.
A limitation of headlight effects was important during the Second World War up to the Vietnam War, but modern combat aviation has introduced sensors which question the relevance of such discipline nowadays.
The suppression of the visible light signature at night may still be worthwhile because of the ground threat, though. This assumes that only negligible civilian traffic drives at night, of course. Civilian trucks would both provide false positives to hostiles and the risk of traffic accidents with dark military trucks would force the latter to switch on their headlights on temporarily in order to avoid crashes.
The use of such driver's aids actually adds another issue: It makes little sense to build mixed convoys of vehicles some of which have such aids and others don't. I suppose we need to limit the employment of such driver's aids for some years to come, and I assume the vehicles in manoeuvre and scouting units should get such aids, as should the advance guard of large convoys.
We should always afford
the very simple, cheap yet effective devices used for night marches at correct intervals used in the past. Mere reflector crosses and other simplistic pro forma measure for night driving safety aren't nearly as good.
(5) Climate control
German military vehicles need only the basic heater and no cooling climate control. Neither Germany nor NATO or EU can be defended in an African desert, period.
Cabins full of electronics are an obvious exception, of course. There should nevertheless be provisions for an upgrade with a standardised climate control kit (for export, if nothing else).
(6) Fuel tanks, road range
Wheeled vehicles can quite easily reach great on-road ranges. 1,000 km is easily possible, and 1,500 km is possible as well. It has been documented that
even in heavy formations the trucks are the main fuel guzzlers, not the tanks. Even the notorious thirst of the Abrams tank prior to introduction of its auxiliary power unit did not change this. Logistical trucks drive more and are so numerous that their combined movement of weight is much greater than the combined movement of armoured vehicle weight even of a mechanised brigade.
Now let's take into account that manoeuvre forces (such as a mechanised brigade) are very difficult to resupply during mobile warfare. Often times they receive supplies only every second day, even if daily resupply was intended. The longer they can make do without resupply, the less trouble for the leadership. The additional fuel thirst from carrying the extra weight of extra fuel and fuel capacity does not come close to compensate for this.
I would thus set a minimum road range of 500 km (except for motorcycles) under realistic conditions including whatever electrical power has to be supplied for the payload. The vehicle fleet as a whole should have about 1,000 km road range. The transfer of fuel from longer-endurance vehicles to shorter-endurance ones should be possible, quick and easy with on-board equipment. This way the higher fuel capacity vehicles (heavy trucks) would probably be the only ones being refuelled by fuel resupply and then much of this fuel could be further distributed over time to lower endurance vehicles. The filling of fuel tanks should be visible outside, so no driver could refuse to hand out fuel as long as his truck's fuel supply is above a marked level (such as equivalent to 500 km road range), by claiming that he's short on fuel.
(7) Protection
Armour protection for trucks is terribly in fashion nowadays. Even RPG-proofing with the aesthetic armageddon of cages is widespread. Protection against mines is focused on the command-detonated types, both below the hull (V-shaped belly, shock absorbing structure, roof-mounted seats) and roadside.
The classic pressure-fused mine threat is being neglected by comparison (otherwise we would prefer to have the front axle well ahead of the cabin, so the cabin isn't directly above the explosion of a pressure-fused mine). We also don't care much nowadays about scatterable mines either. Anti-vehicle (anti-tank) mines can be scattered by multiple rocket launchers, combat aircraft, dispensers underslung a helicopter et cetera. I suppose this threat is something to consider for vehicles in a manoeuvre formation.
Does up-armoring make sense? It depends. One thing is certain, though; it does again favour the higher capacity vehicles. The armour protection for a truck cabin weighs in at about a ton, so two-ton trucks cannot reasonably be up-armoured and still be employed in a two-ton truck role. The drivers of 15-ton trucks barely notice a difference.
It makes sense to keep the overall standard truck design compatible with up-armouring and lightly armoured versions, but I doubt that today's fashion of very much protected cabins and trucks will last for long.
We will probably go back to mere bullet-proofing and add a reduction of secondary effects (reduced fire hazard, spall liners to limit the effect of penetrations, protection against common mines) to it. Even this kind of protection may be limited to those units most exposed to wartime hazards.
(8) Fuel consumption
Very high pressure tires, much electronics, no armour weight and very aerodynamic, curved shapes would be ideal for fuel efficiency. Instead, many military vehicles are rather technically primitive, boxy vehicles. Modern civilian trucks are in between.
I suppose there's a golden middle. We can have the electronics, but the vehicles should keep going in a back-up mode if they fail. We can have the boxy cabin structures that allow easy addition of armoured panels, but we can have aerodynamic, curved skins on them. The 1950's era innovation of central tire inflation systems is widespread anyway and allows for high air pressure tires during road marches and soft, wide tires on soft soil. Alternatively we could use
airless tires.
(9) Off-road requirements
Most vehicles don't need greater agility or off-road ability than the trucks used in the forestry industry. The ones which need better off-road ability can be divided into groups. The greatest off-road aspirations would have the scouting vehicles and combat engineer vehicles (some of which could even be reasonably equipped for amphibious movement) followed by combat vehicles. Most other vehicles even in manoeuvre formations would not drive in difficult terrain often. Most importantly, they are unlikely to cross drainage ditches, fences or walls often. Driver training is a greater determinant of off-road capability in such trucks than the gearbox or axles. There is little to be gained by noticeable variations in the off-road capability of such vehicles. An offroad-wonder such as a Unimog in the same unit as a barely modified 7-ton road truck would allow the convoy effect to kick in: The leader would need to limit his routes and speed according to the limits of the poorest vehicles and drivers.
(10) On-board spare parts
I've long-lost the source, but I remember an anecdote about a convoy in Bosnia during the 90's which got harassed by snipers so badly that hundreds of tires were ruined during a day's trip. Sure, we have run-flat tires nowadays, but once pierced these still require replacement and at least some serious repair. The very small quantity of spare tires has always irritated me. I suppose we need many more, and vehicles should be prepared to carry many more full quality spare tires, ready for a quick change. Two full quality and inflated spare tires on or in a four-wheel vehicle should be normal, not noteworthy. Again, airless tires may be a reasonable alternative.
(11) Radios
All trucks should have the rather large radio antennas (to keep observers from identifying leadership vehicles) and all should be (are) prepared to accept a quick upgrade with a military radio set.
Short-range (hundreds of metres, with automatic relay function) radios should be in all vehicles. Their use should not be more distracting than unavoidable. The costs of this kind of technology have dropped so much that there is really no excuse for not having short-range radios in all trucks. No troops should be forced to resort to improvisations with civilian mobile phones.
(12) Camouflage and deception
Certain paints can reduce infrared contrast, certain netting can reduce both radar and infrared signatures. Exhausts and coolers can be placed and designed to leave less of a signature.
All these signature reduction measures should be considered with the possibility of blending with civilian-type vehicle traffic in mind. I'm not really thinking of mixing with civilian traffic, but many civilian trucks with quick military paintjobs would be used in a major conflict. They would be driven either by contractors or by soldiers.
Either way, they would be lower priority targets than the dedicated military trucks. The latter possess more capabilities, are more likely to be part of manoeuvre forces, and are more likely carrying valuable equipment.
The heavy army trucks should thus be able to switch between an almost civilian appearance and trying to hide entirely (not on the move, of course). Special versions such as trucks with multiple rocket launchers or expensive air defence or electronic warfare equipment should be able to look identical to their less important military truck cousins of the same basic vehicle type.
(13) Crew comfort other than temperature control
Many heavy civilian trucks possess a module on top of the cabin (or in its rear) with a bunk for sleeping. Military trucks don't, for somehow we still pretend that a weapon on most if not all trucks is a good idea.
We should nevertheless provide some more comfort for these troops. Sleep deprivation is a huge problem during military campaigns, and it is well-known that tired drivers cause many accidents. These accidents are 'friction' which sabotages the execution of the commander's intent. A reduction of this friction requires enough sleep for drivers. Yes, this should be a truck design issue, too. The truck's side could have a quick folding tent roof and a quick-folding camp bed with enough insulation for a European spring or autumn night. Maybe there is actually enough personnel for two men per cabin; the second one should be easily able to adjust his seat, get a pillow and sleep during a road march. Many cabins weren't designed with this in mind.
(14) Navy and air force have little need for standardisation or off-road capabilities
Dump all vehicles which were found deficient in practice there.
(15) Mobilisation
It should be possible to satisfy the need for trucks during an emergency doubling of the army within six months. The production of enough trucks should be possible on short notice and civilian commandeered trucks should be adapted in time.
(16) Temperature range
Useful down to about -40°C, without excessive breakages. This includes suitable coolants, rubbers and lubricants.
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