Live off the land? What if the machines use salted earth tactics? Where they render an entire piece of land uninhabitable?
Which I wouldn't put past them doing. They've no need for the biological aspect of the planet, only the material assets. So going full USSR on the land would be not only a viable tactic, but probably standard practice.
But with the super intelligence of AI, what if they figured out the way to make portable nuclear power sources? What if they programmed their ground troops to be capable of independent decision making? I mean yeah they would be scrambled once they've lost contact with the main hive mind, but they would quickly designate a new leader within the squad and create their own smaller hivemind so they can continue fighting.
You mean like the 150yr power cells the T-800 is fitted with? And as a true AI, all the machines would be capable of sentient, fully autonomous learning and decision making, in the same way we do, but much,
much faster. You'd never be able to de-centralise the command structure, as not only would every one of them know and understand every aspect of the 'plan', but be able to modify and assess the plan in real time, independently of higher command.
Well that's an irony, usually the air force is any army's best hope for winning any fight.
Yeah, air superiority is
the battle winner. Ask Zee Germans how much fun it is when you've got a perfectly good army, but you don't have control of the skies and you spend your days getting pasted by Hawker Typhoons day in, day out.
So we're stuck with the navy and ground troops. What other hope do we have?
I wouldn't say it'd be plain sailing (no pun) for the navy. Modern warships are ridiculously fragile compared to WWII types. Hell, the Norwegians lost a destroyer last year because it nudged a tanker in a fjord. I remember reading an article on a discussion about re-activating the old 'Iowa' class if we had a dust up with Iran, as the US will need a tough as boots fire platform to break into the Strait of Hormuz so the Marines could land without getting wasted, and nothing is more tough, old school or has more firepower than Mighty Mo.
That doesn't mean I want to ever see someone doing a handbrake turn in one (I'm looking at you, Battleships) ever again.
Without the air superiority, the ground troops are fucked. The machines will be able to smash anything they want, any time they want, much like the US did during Desert Storm, and rendered the Iraqi military down from one of the largest and most capable in the world, to a pile of news videos of GBUs leveling buildings and the 'Highway of Death'.