This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning).
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.
Q: Passage: In the later part of 1966, the 1st Squadron, 10th Cavalry , went to the Republic of South Vietnam during the Vietnam War operating in the II Corps Area as part of the 4th Infantry Division. It received its first Valorous Unit Award in May 1969 for actions at LZ Oasis against a battalion sized enemy force. The 1st Squadron of the 10th, with the 4th Infantry Division, earned 12 campaign streamers and other awards in Vietnam. In April 1972, Troop H/10th Air Cavalry was formed and placed under the 17th Aviation Group at Pleiku. The troop was located at Lane Army Airfield near An Son . H Troop aircrews conducted aerial reconnaissance, hunter/killer, and search & destroy missions using OH-6 Cayuse , AH-1 Cobra , and UH-1 Iroquois helicopters and ground troops from the Republic of Korea's 2nd Infantry Division and the various South Vietnamese Army units. The unit disbanded shortly after the Paris Peace Accords were signed in 1973. Specialist 4 Robert Frakes, the last American combat casualty of the Vietnam War, perished in a post-crash fire after his OH-6 helicopter was lost to enemy fire on January 26 - the last day of US combat operations.
A:
How many years after the 1st Squadron, 10th Cavalry went to the Republic of South did it received its first Valorous Unit Award?