A somewhat fanciful illustration from a U.S. equipment manual showing the VHF Ground-to-Air Radio Set AN/CRC-1 being used by ground forces to call in air support.
![VHF Ground-to-Air Radio VHF Ground-to-Air Radio](http://www.lonesentry.com/blog/wp-content/uploads/2010/11/ground-attack-radio.jpg)
When assembled for operation, Radio Set AN/CRC-1 may be used as a ground-to-air command set to transmit information from ground troops to combat aircraft relative to strategic ground targets against which strafing or bombing action is desired.