"Light forces need high quality communications to coordinate decentralized efforts into a coherent whole," he says. "Good intelligence is vital to light infantry intelligence obtained by the light infantry from every source." If you don't have coordination measures in effect that don't rely on radio communications, there are going to be problems with your unit's ability to plan and execute an operation. 'You can't just accept casualties' when fighting near-peer adversaries like U.S., writes Petraeus.