The military chain of command likely will survive undamaged save for the very top portion on Earth itself but we are talking about something far more profound than launching military strikes, which likely would be futile against a Borg cube if any ships were still in the nearby area, or other short term goals. The Federation is a loose confederacy consisting of one hundred and fifty or so "nations" each with its own divergent culture, history and way of doing things. Some had bitter relations with other members in the past, nor are two centuries guarrentee such slights have been forgotten, others like Ardana rather fail to live up to the ideals of the Federation and appeared to have joined from some Economic-Political advantage. The only thing binding them togather would be Earth and humanity which would be destroyed and crippled respectively.Lucky wrote:One problem is that humans have moved to thousands of planets by the time the Borg shows up, and destroying the capital will only have a minimal effect on military operations because such a thing will be planned for.
Earth is the headquarters of Starfleet the offical military arm of the Federation as well the site of President and his cabinet the trans-planatary goverment of the Federation. So much as there is a "Federation goverment" Earth is it.Earth is also not the center of scientific research. It's simply a figurehead.
Perhaps the experiances which "shape" an individual mind are important to the Borg, adding the distiction of a thinking force to thier collective instead of raw data. perhaps they use organics like CPU's, harnessing them wirelessly togather to achieve ever greater feats in computation. Whatever the reason the Borg do seem to have a need to "assimulate" rather then be satisifed with some blueprints and gene samples.The Borg can't honestly care about culture given it seemingly does nothing with it. It wants rare materials, data, and samples of technology and life-forms.
That is not a response to what I asked. You stated the Borg might be afraid of "gods" which appear frequently in the Alpha quadrent/Earth area to which I asked why send any cubes at all then. The stakes are equally as high if you send one ship to assimulate Earth or a dozen, if you anger Q he's going to wipe out you out with a snap of his fingers.If the Borg seriously wanted to assimilate Earth they would send more then one Cube at a time from the start. 2 cubes will not strain the Borg's capabilities.
Now to the point you raised I have given my best idea as to why and will only reiterate both Cubes had a high probibility of success. The first one practically did succeed before Data managed to hack them into submission, no defenses were left by that point no hope.