|Research|| Power systems upgrade |
Power systems upgrade
Ground battery upgrade
An army that wants to field long-range units will need to attach artillery attachments to their assemblers. This structure also contains upgrades for all long-range combat units.
| Proximity mine radar upgrade|
Howitzer mines gain extended vision radius and remain for a longer duration.
| Power systems upgrade|
Artillery sentinels remain active without a power connection.
| Ground battery upgrade|
Longbows can now target enemies on the ground.