Part of the work being done by his staff was compiling a list of all the locations where food was stored in bulk and integrating it, where possible, into the coastal defense plan. Any stocks that could not be easily integrated were going to be either confiscated or destroyed before the landing. The Posleen would not find one iota of harvested food if he could help it.
The inner cities, on the other hand, were a different kettle of fish. The plan called for defense of the inner cities, but only as firetraps, hell holes to slaughter Posleen. The basic plan had worked well for General Houseman on Diess and Jack intended to use it in America. It also meant that the plains were going to be the battlegrounds that the American populace insisted on.
Again, evacuate the cities. Around them in the suburban areas, at locations that were being determined, would be established firebases. Around the inner city construct a wall. The bastions would be the warehouses and skyscrapers of the city itself. Those bastions would be able to interlock fire with the firebases surrounding the city. As the Posleen attacked the city, the firebases would take them under fire from behind. If they turned on the firebases, the city defenders would take them under fire. The city would become a giant octopus of destruction, engulfing the attacking Posleen in its arms.
Certain major boulevards, preferably ones that were in direct line of sight with the outer fortresses, would be left open, but with walls on either side and the ability to close them off if necessary. Such killing fields had worked well on Diess and they might work again. Let the Posleen file into the boulevards, thinking they were advancing, then open up with all the weaponry in the city.
The fortress plan also reduced the logistical argument. The city fortresses could be stocked for a five-year siege if the Army started constructing and filling warehouses and silos immediately. If the urban forces had to retreat they would destroy the remaining stocks of ammunition and food with preplaced charges. If the war took more than five years, they might as well slit their throats and be done with it.
He understood that eventually the coastal plain cities would fall unless the Fleet came in time. But the reduction of the Posleen forces would work in America's favor in phase two.
Phase two involved drawing back to the mountains. When a region or city became untenable the forces would have to be drawn back through secured routes to the mountains. In this more than anything he thought the Armored Combat Suit units would be effective.
The cities' outer fortresses would be designed whenever possible with their heaviest concentration along the side toward the nearest refuge areas. When a city's defense became untenable, large sections of the city would be dropped, then the remaining defenders would gather on the refuge side and perform a breakout. With the interlocking fires of the exurbs and the city bastions, the forces might be able to break through the surrounding Posleen and start on the long route to safety. As they performed their breakout, ACS units could descend on closing Posleen columns and break them up.
In some cases the Navy, the wet arm, might be able to slip in and perform the evacuation or provide fire-support. He expected this in the case of the Florida cities especially. The Navy was reactivating ships long dormant to support those endeavors.
In the long run most of the cities would fall. But the Posleen that were attacking them would break their teeth, reducing the pressure on the mountain defenders and reducing the overall Posleen population. Until the Fleet was completed it came down to a war of attrition.
The initial mountain plan, which called for a complete retreat to the mountains and the turning over of the cities to the Posleen, would have left vast numbers of Posleen virtually untouched and all the resources of those cities at their disposal. Once the Posleen attack on the mountain passes got into high gear those forces would have been available and fresh. Now they would generally be unavailable. And if the Posleen did attack the mountain defenses they would be battered from hammering on the brick wall of the city fortresses.
If the situation dictated, forces could even sally against the Posleen. But he intended to hold that card up his sleeve or three years from now some politician would give away their hard-won gains in a pointless gesture.
In the mountains and in the interior the situation would be slightly different. The Appalachian and Rockies routes had been worked on for the past two years and featured multilayered defenses all the way up to the Continental Divides. In the southeast, heavy defenses had been prepared along the Tennessee River, through the region of and heavily assisted by the Tennessee Valley Authority, guys who knew all about big projects. In addition, along the outer slopes of the Blue Ridge Mountains and the Rockies twenty-seven superfortresses were under construction. These fortresses, once completed, would afford interlocking antiship fire all along the coasts and overlooked strategic cities. In addition their locations provided an umbrella of defensive fire over the entire country. Posleen forces that attacked the mountain defenses from the coastal plains were again going to break their teeth. They would advance, but he doubted they would be able to break through.
In the interior, landings were anticipated to be light. The way that the Posleen assaulted planets, in large more-or-less random swarms, caused them to concentrate the majority of their forces on the seacoasts. As in the coastal areas, defenses were just starting construction around the inner cities and forts were being constructed in the suburbs. In the case of the Midwest, however, the parasite forts were larger and, conversely, less heavily armed. They were larger because these cities were not going to be evacuated and if the Posleen landed in and near them, the civilians were going to run for shelter. The entry systems were being built by amusement park companies and were designed to accept millions of people in a matter of hours.
The fortresses were less heavily armed because there were only so many heavy weapons to go around. The armaments allocated to cities such as Pittsburgh, Minneapolis and Des Moines were based on the lower likelihood of attack and the greater likelihood of external support. The fortresses also were designed similar to traditional «castles» and hosted numerous firing ports on every side.
After the gates shut the «civilians,» many of whom had designated militia positions, would be expected to pick up arms from armories scattered throughout the walls and proceed to firing positions. From there, behind fixed defenses, the refugees could become effective fighters. They would have to be; the interior fortresses would have a third of the «conventional» forces allotted to the coastal fortresses. The interior would also be completely without ACS support. The ACS would have other overriding missions.
The Posleen, as a rule, did not care for extreme cold any more than humans. They also were less able to deal with it effectively. Therefore, they landed in temperate or tropical zones. Thus, Canada could be guarded by her own forces and be well off; the northern border was not considered a problem. That did leave Mexico as a failure source.
An argument had been advanced that America should just erect a great wall along the Mexican border, something that some people had wanted for years. Whether it was a valid argument or not was moot; there were insufficient resources to do the job before the Posleen landed. Any Posleen that landed in Mexico were going to have the field day expected in the Third World for the Posleen and most would probably remain there at first. But some of them were going to turn north; how many was anyone's guess.