[1][2] District Officers wore uniforms, according to the climate, but their formal tunic with gold braid was usually reserved for ceremonial occasions.
Until the 1930s, each overseas possession had its own administrative service, and prospective District Officers needed to apply to one or more of them.
Once in post, an officer wishing to transfer to another colony or British protectorate had to make a new application to its government.
[1] Before being appointed, a candidate was first a District Officer Cadet, undergoing a rigorous training, and was then promoted to Assistant District Officer, usually after two years of successful probation and after passing examinations.
In particular, the Governors of Hong Kong, Gibraltar, Malta, and Bermuda were almost invariably senior British Army or Royal Navy officers.