Answer
At Ariminum, Belisarius achieved a bloodless victory by employing strategic maneuvering and exploiting the element of surprise. Recognizing the city's vulnerability due to a lack of supplies, Belisarius swiftly positioned his forces, cutting off the enemy's reinforcements and supply routes. Faced with this unexpected predicament, the besieging forces realized their disadvantaged position and ultimately chose to retreat, lifting the siege without engaging in direct combat.