Military Regions of Laos, roughly corresponding to the areas of the country's 13 provinces, had air transportations that could not accommodate anything larger than twin-engine aircraft and defense was entrusted to local troops.
Beginning in 1955, the Kingdom of Laos was divided into five Military Regions (MR), roughly corresponding to the areas of the country's 13 provinces. Air transportation in Laos depended on half a dozen airports and auxiliary airfields that could not accommodate anything larger than twin-engine aircraft. With such barely developed transport infrastructure, the defense of the country was entrusted to local troops raised in and stationed at military districts reflecting French traditions, designated "Military Regions" (French: Regions Militaires), which encompassed two or more provinces. 
