Cell phone towers are not critical infrastructure, destroying them is just the cost of war.

Hydroelectric dams, nuclear power plants, anything that takes a long time to build, would be spared if the intent is to takeover.

Off the cuff invasion scenario:

0. Jam all gps
1. Multistike all air force and anti air installations
2. Emp over military facilities
3. Destroy key communication points
4. Destroy power grid
5. Mine all major roads (cluster mines from the air)
6. Secure /disable nuclear assets

Cut the population off so they can’t organize, destroy the military, secure critical assets. Since most of the CA population lives within 100km of the boarder the only real pernicious worry will be submarines deployed and further afield military posts in the north.

In a invasion we don’t have to think about software kill switches, each tower can be trivially destroyed.

The cell phone network might be a day 0 target, but Cell phones would be left mostly untouched, they are easy to track/drone strike. Interference would only happen acutely for IED concerns or cqb operations

GPS/Satellite location would be jammed / disabled

Internet connections would be targeted, sea cables, microwave, etc

Electrical systems would be targeted.

Prioritize:

• electrical backups
• clean water backups
• communication backups (point to point fiber, lasers, microwave)