A second group of Scouts and Raiders, code-named Special Service Unit No. 1, was established on 7 July 1943, as a joint and combined operations force. The first mission, in September 1943, was at Finschafen on New Guinea. Later operations were at Gasmata, Arawe, Cape Gloucester, and the East and South coast of New Britain, all without any loss of personnel. Conflicts arose over operational matters, and all non-Navy personnel were reassigned. The unit, renamed 7th Amphibious Scouts, received a new mission, to go ashore with the assault boats, buoy channels, erect markers for the incoming craft, handle casualties, take offshore soundings, clear beach obstacles and maintain voice communications linking the troops ashore, incoming boats and nearby ships.
The 7th Amphibious Scouts conducted operations in the Pacific for the duration of the conflict, participating in more than 40 landings.
The third Scout and Raiders organization operated in China. Scouts and Raiders were deployed to fight with the Sino-American Cooperative Organization, or SACO.