The reason why it might not be as big was because military power required at that time was for sustaining the peace of Kyoto, guard a person upon request, followed as a retainer when one left a post due to zuryo, and arrest the Zaichokanjin (the local officials in the Heian and Kamakura periods), but there was hardly any turmoil.
それほど多いものではないという理由は、当時必要とされた武力は、京の治安維持、要人の護衛、受領として赴任する際に引き連れ、在庁官人を押さえる程度のものであり、大規模な争乱などほとんど無かったこと。