Final answer:
During the Six-Day War of 1967, Israeli forces would have likely reached Beit Nuba as they gained control over the West Bank. Beit Nuba is about 12 kilometers northwest of Jerusalem. The exact date they reached Beit Nuba is not specified.
Step-by-step explanation:
The question does not provide enough context to determine when the army reached Beit Nuba with certainty. Beit Nuba was a village located in the West Bank and, during the Six-Day War of 1967, Israel gained control of the area. The Israeli military advance through the region likely included reaching Beit Nuba during this conflict. The village was located approximately 12 kilometers (around 7.5 miles) northwest of Jerusalem. The 1967 war saw Israel taking control over significant territories, including the West Bank region, which brought the entire city of Jerusalem under Israeli control and solidified Israel's presence in the region.