In this universe, the technology needed to travel between stars needs a lot of energy and bulky machines (besides being ridiculously expensive). Therefore only a small number of capital ships is capable of moving to other systems. Naturally that did not stop humanity from beating the hell out of each other and alliance A declared war on faction B.
One of the conflicts fought takes place in the planetary system Sol-7B which mainly provides raw materials to faction B. Alliance A wants to take control of the main planets of this system and sends a single capital ship (the Agonizer) to take control of the system. Sol-7B is defended by a single capital ship of faction B (the B 227).
Both ships are at equal footing when it comes to maneuverability and speed, but the Agonizer eclipses the B 227 when it comes to raw fire power. The fleet command of faction B therefore orders the B 227 to not engage the Agonizer on system entry and it takes defensive position around planet Berusslow-4c which is the first target of the Agonizer. As the Agonizer approaches, the B 227 moves 'behind' the planet to deny the Agonizer a line of fire. The B 227 then starts to mimic the Agonizer's maneuvers to keep the planet between both ships, avoiding a direct fight.
Unable to engage the B 227, the Agonizer enters the lower planetary orbit to deploy the superior invasion force using two-way dropships and the battle on the surface begins. The Agonizer is kept as a mobile base which allows for rapid deployment and re-deployment on the surface. Ground troops are brought back to the Agonizer to increase the number of reserves that can be deployed. The B 227 mimics this behaviour and is able to reclaim lost mining facilities and cities by rapidly deploying the former defending forces as soon as the Agonizer moved to support another ground assault.
The task of the Agonizer is to hold a certain number of key locations on Berusslow-4c as well as some key locations on two other planets in the same system. Most of the locations that should be held by the alliance A are clustered on a specific site of the planet. Still some of the objectives are found on the other site of the planet. The total number of troops the Agonizer can deploy is much larger than the defending force.
The B 227 is focused on deploying a vast number of troops to reclaim those key locations once the orbit is clear. The numerical superiority in these attacks minimizes their losses. These locations are then left with a minimal guard, to deny the Agonizer from inflicting great damage by retaking them again. Therefore, this tactic focuses on using the actual manpower as best as possible while forcing a scattering of enemy troops along different key locations.
Therefore the question is:
- Can the Agonizer break the stalemate imposed by the presence of the B 227?
- There is only limited air power available on the planet, as anti-air weaponry against smaller craft is advanced. Dropships carry strong anti-missile systems, which renders them immune to medium amounts of anti-air power.
- There are no targeted space weapons like missiles available as anti-missile systems are advanced. Hence, space battle rely on line of sight (or almost line of sight, as you could shoot at a specific part of space, where the enemy ship will be once the projectile has travelled the distance).
- Smaller space ships are not used due to their inability for fast travel and their inferior effective weapon power.
- Energy read-outs and exact position of the enemy ship are known to both sides at any point during this campaign. So both sides are always aware of the intended course and speed of the enemy ship.
- The question is mostly focused around resolving the space stalemate although ways to use the ground forces for exactly this purpose are also welcome.
update the real objectives and tactics of both sides and removed the question "Is this scenario realistic?" as it is based on the structure of the universe itself. Feel free to generalize some points, if you find them ill-suited.