What did Dahl's uniform consist of during his service?

Dahl's uniform during his service consisted of khaki shorts and a shirt, which reflects the practical and functional attire typically worn by military personnel in tropical or warm climates. The use of khaki is significant as it is designed to blend in with the environment, especially in settings where camouflage is advantageous. This choice of uniform is particularly fitting for Dahl’s experiences in various theaters of World War II, where the conditions and climate would necessitate lighter clothing.

In contrast, the other options represent different types of attire that wouldn't align with the standardized military clothing in Dahl's context during that period. For example, blue shirts and trousers typically refer to civilian clothing or alternative military styles not appropriate for combat. A tan suit and bomber jacket might suggest aviation personnel but does not match the specific uniform Dahl wore as a soldier. Meanwhile, a green camouflage outfit is more associated with modern military uniforms rather than the khaki shorts prevalent during the time Dahl served. Thus, the correct answer accurately represents the historical context and conditions of his service.