USS Alcona, an Alamosa-class cargo ship of the United States Navy, was active during World War II. She was tasked with supplying various advanced bases in the Pacific. During her war service, USS Alcona delivered vital supplies to a number of locations, including:

1. Saipan - This island in the Mariana Islands was a significant base for operations in the Pacific Theater.
2. Okinawa - The site of one of the largest amphibious assaults in the Pacific War, critical for launching subsequent operations towards Japan.
3. Iwo Jima - Another key location in the Pacific serving as a strategic base for air operations.

These bases were crucial in supporting the ongoing military operations against the Japanese forces by serving as logistics hubs for personnel and material.

For additional details on USS Alcona’s specific missions and other locations she supported, you may refer to dedicated naval history sources or archives.