By default, this entity will be a priority target for units/turrets, who will choose to attack it even if it does not block their path. Setting EntityWithOwnerPrototype::is_military_target to false will turn this off, which then makes this type equivalent to SimpleEntityWithOwnerPrototype.
SimpleEntityWithOwnerPrototypebooleantruetrueWhether this prototype should be a high priority target for enemy forces. See Military units and structures.