The detail on the artillery support applied in the area of Hill 82 during Operation HUMP has been extracted from the Post Op Analysis by 105 Field Battery. A transcript of the complete document can be seen here.

1740 hrs: Battery Target GR 151 235 - Possible VC resting area.

1610 hrs: Battery target 165 222 in support of A Coy who have strong contact.

1030 hrs: It was noted that ammo resupply would be needed for the CO 1RAR Fire Support Plan plan to clear enemy from a dug in position at GR 161(?) 231(?) Registration was to be done by Possum 1.
1201 hrs: India 1 engaged target at 164 221.
1230 hrs: Completed engagement at GR 160 227. Recorded as XG 850.
1255 hrs: (Started) Registration of Dark Castor 7 onto XG 851 and Dark Castor 6 onto XG 852 By Possum 1.
1400 hrs: Engaged target XG 850 twice 126 rounds each engagement.

The indirect fire targets are plotted on the map below.

Base map created using software supplied by

In his Post Op Analysis Major John Healy indicates that on the afternoon of 8 Nov 65 armed helicopters attacked the en position and artillery fire was directed onto the position and along the ridgeline. (See here.) CAS was used on the morning of 9 Nov 65. (See here.)

Accuracy of Reported Locations

Note that some of the artillery targets were registered from the air. In addition the Operations Officer dropped ammo into A Company on the afternoon of the 8 Nov 65 and also adjusted the artillery fire. The Fire Support Plan for 1 RAR on 9 Nov 65 gave targets to eight figures. This suggests that the locations of A Company was accurately known and reported.