Playing as Blue force, I have been unable to entice the Red force to fire their AT4s at the Bradleys. I set short covered arcs for all my units to prevent suppressing fire, edited the defenders' stance to "active" to encourage aggressive use of AT assets, and paraded my units all around the map, but the AT4s would only fire at my Recon infantry. Seems like a targeting glitch is preventing them from firing on the Bradleys.