Battleships are the first capital ship a player will obtain. They are good at destroying large capital ships and occupying bases that have only have fighter defenses. Also, they are the cheapest way to clear large quantities of fighters over a base with more than 15 Command Centers and defended by multiple Planetary Rings.
Advanced Tactics Edit
Battleships are mostly used to kill larger capital ships. Any other uses are more effectively accomplished by Cruisers, Frigates, or Heavy Cruisers. However, shield-raping fighters over an Astro with high levels of command centers is usually done better with Battleships as a base with Lvl 15 Command Centers will usually let fighters pierce the shields of lower level ships. Edit
Battleships are often used with a specialized Cruiser or Frigate fleet to ward away larger capital ships, since Battleships are very vulnerable to Titans and larger ships.