 A US Advisory Team operated in support, as did a few Australians from the Australian Army Training Team Vietnam (AATTV); despite their efforts, the capabilities of the ARVN remained limited.The arrival of 1 ATF further restricted their ability to operate in Phước Tuy as it increasingly came to dominate the province.Initially, 1 ATF, under the command of Brigadier Oliver David Jackson, consisted of two infantry battalions