Army Order 112 was a significant directive that formally established the Intelligence Corps within the British Army. This decision was made during a critical period in World War II when the need for effective intelligence became increasingly apparent. The formation of the Corps brought together various aspects of military intelligence into a cohesive unit focused on gathering and analyzing information vital for strategic decision-making. The Intelligence Corps would play a pivotal role in supporting operations in Europe and beyond, participating in reconnaissance missions and evaluating enemy movements. Through enhanced communication and coordination, the Corps improved the Army's operational effectiveness. The establishment of this unit also reflected a broader shift in military strategy, emphasizing the importance of intelligence in modern warfare.

Initially, the Corps was composed of personnel who had previously worked in intelligence roles across different services. As the war progressed, the importance of trained intelligence officers became clear, leading to the recruitment and training of a dedicated workforce. Various branches of the Army, including the Royal Engineers and Royal Artillery, contributed to the development of the Corps, which began to standardize methods and practices for intelligence work. The newly formed Intelligence Corps became integral to many key operations, providing critical support during significant campaigns like the Normandy Landings and the North African Campaign. Its successful implementation set a precedent for future military intelligence organizations and influenced post-war military doctrine.