A first communication device generates a beamforming training initiator packet for transmission in a wireless communication network. The beamforming training initiator packet indicates a start of a beamforming training session, and includes a plurality of fields that respectively and individually identify multiple second communication devices that are to process beamforming training packets transmitted by the first communication device during the beamforming training session. The first communication device transmits the beamforming training initiator packet, and then transmits a plurality of beamforming training packets during the beamforming training session.