Although, theoretically, Josephus may have joined the Roman army during the siege, there is no data. However, I believe that there is a basis for his testimony that “an old woman and another, a relative of Eleazar, superior in sagacity and training to most of her sex, with five children, escaped by concealing themselves in the subterranean aqueducts, while the rest were absorbed in the slaughter” (The Jewish War 7.399), which could describe what happened.