That April, Nguyễn loyalists Tôn Thất Dụ,
Trần Xuân Trạch, Trần Văn Tự
and Trần Công Chương sent military support to Ánh.
General Trần Văn Trà sought to gauge any South Vietnamese
or American response to the invasion, as well as to solve logistical issues, before proceeding with the invasion.