Jothar, we need both learning and fighting. When Yaakov went to meet Eisav, he prepared for a battle. In ancient times, the Jews had an army to actually fight. Why did they need it? Why didn’t they just sit and learn? In fact, the ones doing the fighting were the ones who were usually learning, which means there were far less people learning while they were fighting!
We need both. Tevah is not that learning protects you. Tevah is that a sword or a gun protects you, with Hashem’s help.