In 1977 I was doing temporary exchange duty with 8/9 RAR in Enoggera Barracks Brisbane. We were being indoctrinated into their land warfare center in Canungra and were taught their doctrine, remember this was just half dozen years after infantry had stopped being sent to RVN. Most privates sported the RVN medals. Their lessons at that time taught that the infantry section was armed with SLR rifles generally except for the lead scout carrying an M16A1 and the section commander carried an M16A1...and there was one M60 per section. In Platoon HQ the Pl Comd and signaler each carried M16A1 and I think the Platoon 2I/c... I was Pl weapons det and I carried an M60 but my A/Gunner carried an M16A1. I think the F1 SMG was relegated to drivers. I don't remember them in the infantry section. They had bought these weapons straight out of the US supply system for RVN.