A number of 1 ATF operations resulted in major defeats for the enemy including "Operation Marsden" in 1969 whereupon enormous caches of weapons and supplies and the main hospital servicing the local Communist forces were discovered and destroyed; and "Operation Townsville" in April 1970 whereupon Australian and New Zealand platoons captured the operational signals codes and one-time cipher pads used by the VC headquarters. As a result, senior U.S commanders including General CW Abrams, Commander USMACV were alleged to have referred to it as "the biggest intelligence coup of the war." 1 ATF was withdrawn in late 1971.