"There were endless problems with the radio equipment, for which Browning blamed his signals section. But there were other means of communications available, such as the GHQ Liaison Regiment that was in contact with London through its special radios, as was a BBC news team with a VHS set. British 1st Airborne had direct contact with 2/Para and with the Corps rear headquarters at Moor Park that was also in intermittent contact with Browning. The Dutch resistance were sending coded messages to 82nd Airborne warning them that British 1st Airborne was in trouble on a telephone system that reached as far south as Son and 101st Airborne. The failure was not primarily one of communications (although there were undoubtedly problems) but one of staff work and experience. British I Airborne Corps asked Moor Park for copies of the signals and contact was established the next day, but for the first two vital days of the operation, Browning was never in complete control. "
Operation Market Garden September 17 - 27 1944