[5] On 29 May 1944, Musulin, aided by Chetniks, was evacuated along with the British and American mission and 40 rescued Allied airmen to Bari, leaving General Mihailović without support.

Musulin successfully commanded the airlift Operation Halyard, the rescue from the air of about 447 U.S. airmen from Nazi-occupied Yugoslavia, from 10 to 29 August 1944.

At this time the British were the main Allied authority in the Mediterranean, and their Special Operations Executive (SOE) complained to Musulin's superiors in the OSS, who decided to expel him from the service.

In late 1944 Musulin was transferred to the Far East as part of the naval intelligence service, where he stayed until the end of the war.

After the war, the CIA conducted its own investigation into Musulin, which concluded that he had acted appropriately and that he had been the victim of James Klugmann and other British agents in the SOE with communist sympathies.