It's actually a very good thing that the DS9 writers established planetary defenses (even primitive ones) as nigh-invincible. Now we finally understand how interstellar wars are possible in the first place! Previously, we were led to believe that a single starship could terminate a civilization if given a few hours. Now we realize that no single starship will get those hours, and that even hundreds of ships will have a struggle ahead of them in trying to get to firing positions. This fits perfectly with the TNG dialogue wherein fleets numbering in dozens ("Redemption") are deemed ridiculously small for conquest purposes...
The situation nicely fits the sailing ship analogy that Trek warfare usually follows. A single ship can fight another to a decisive defeat, even though this requires fancy maneuvering and a long time spent pounding the opponent at point blank ranges. A single ship can also bombard a coastal town/planet and blackmail the governor to submission. But not even a mighty fleet can make much of a dent against a fortified port.
OTOH, fleets are not tied to logistics much, as they don't have to take on coal or oil for propulsion. Sensor ranges are limited, and fleets can roam in the vastness of the ocean/space unaware of the whereabouts of the opposition. Often enough, ground combat involves naval infantry drafted from ship crews, as the fleet maneuvers take such long times that dedicated troops would grow restless and logistically untenable. Small contingents of specialist marines may also be used as spearheads. Even small craft with their small cannon can make a contribution in the unholy melees that all fleet battles devolve into. But the small craft, while nimble, are usually slower than the large ones and cannot be used in the manner of the naval aircraft of the 20th century.
Timo Saloniemi
The situation nicely fits the sailing ship analogy that Trek warfare usually follows. A single ship can fight another to a decisive defeat, even though this requires fancy maneuvering and a long time spent pounding the opponent at point blank ranges. A single ship can also bombard a coastal town/planet and blackmail the governor to submission. But not even a mighty fleet can make much of a dent against a fortified port.
OTOH, fleets are not tied to logistics much, as they don't have to take on coal or oil for propulsion. Sensor ranges are limited, and fleets can roam in the vastness of the ocean/space unaware of the whereabouts of the opposition. Often enough, ground combat involves naval infantry drafted from ship crews, as the fleet maneuvers take such long times that dedicated troops would grow restless and logistically untenable. Small contingents of specialist marines may also be used as spearheads. Even small craft with their small cannon can make a contribution in the unholy melees that all fleet battles devolve into. But the small craft, while nimble, are usually slower than the large ones and cannot be used in the manner of the naval aircraft of the 20th century.
Timo Saloniemi