Battle of Long Tan was 18-19 August 1966. No T50 turrets there. In fact one APC commander, Cpl PE Clements, died of wounds sustained in the battle as his car did not even have a shield on the gun - only three of the squadrons 10 APC were fitted with gun shields - I do not know which they were.
APC Call sign 23A - Clements vehicle . Trooper showing bullet holes from the battle - note no gun shield:
This is another M113 patrolling the rubber plantation the day after:
Day after, M113 of of No. 1 APC Squadron and troops of 6 RAR waiting to return to Nui Dat
Nice shot of the .50 cal. again 19 August
Bruce. A lot of carriers (including mortar carriers) were moved up to patrol the next day, so be careful using pics on the web of next day non-Long Tan vehicles chasing the retreating enemy in Operation Smithfield.
This may be of interest: