Planetary Defense is the fraction of invading 
Legions that will be immediately killed at the start of a ground invasion.
Bonuses to 
Planetary Defense[ | ]
There are very few ways to increase Planetary Defense. The 
Fortification technology is the only mechanism available to all factions. Vigilant factions have access to the 
Temple of Valor. Certain and Devout factions have access to the Defensive Meditation and Devout Defenders technologies, respectively.