Another problem of supply lines
If you set fixed goals — "we wait for 8 more supply convoys to arrive, and then the batallion sets off," you mess up the whole offensive if something goes wrong.
If a few convoys are intercepted, or delayed, your batallion goes out of sync with the rest of the offensive.
Your batallion becomes a sitting target for n-more days, while eating through its supplies, so it needs even more of them.
You risk that supply line drivers will give away their destination, and intel on you, as well as giving away the FOB from which they carry the supplies, and routes/scheduled of other trucks.
Once the enemy finds out your supply line, and reaches it, he will certainly keep trying repeating to intercept your supplies for easy loot, and kill counts.
If your supply line goes through forests, or conurbations, once the enemy reache it, there is no way you can undo the chokehold on supplies with cheap airstrikes. You will need to send clearance force, or, worse, go back to secure its who length if you cannot locate the exact place where your supplies were intercepted.
Sending single batallions across 500km+ distances is simply dumb, it's not even a mistake, because such s**t would never be told in any military academy in the world.
