Final answer:
The provided details do not include the year the Sergeants Major Course began; instead, they pertain to a range of military historical events unrelated to the specific question.
Step-by-step explanation:
The Sergeants Major Course does not have a specific start date referenced in the provided information. The details given pertain to a range of historical military events, such as the segregation in the 82nd Airborne Division during World War II, the first female cadets graduating from West Point in 1980, the integration of the armed forces, and the extension of training for African American units like the 761st Tank Battalion during World War II. Unfortunately, this information does not directly answer the question regarding the start year of the Sergeants Major Course.