Pearce served for the duration of the
First World War with the
Somerset Light Infantry in India. He entered the Indian Civil Service in 1920. In 1931, he was appointed deputy commissioner in
Burma and in 1934 Finance Secretary to the Government of Burma. he was appointed head of the Civil Affairs Service, Burma (CAS(B)), a military body tasked with restoring civil administration after the
Japanese forces withdrawal, providing food, water and medical supplies, restoring the police and reopening schools. He issued an arrest order for
Aung San for which he was reprimanded by
Mountbatten fearing it would lead to rebellion and was replaced in the post by
Hubert Rance. In 1946, Pierce was appointed counsellor to the Governor of Burma and served as a member of the committee on the Indo-Burma debt. In the following year, he was appointed Auditor-General of Burma, a post he held until his retirement from the Indian Civil Service in 1948. In 1949, Pierce was appointed Chief Secretary of the British protectorate of
Eritrea which was under
British military administration and still trying to recover from the effects of war. He remained in the post until 1952. == Personal life and death ==