Why did Romans carry rucksacks?

Romans carried rucksacks, known as "sarcinae," to transport their personal belongings and essential supplies during military campaigns and long journeys. These rucksacks were designed for practicality, allowing soldiers to carry food, equipment, clothing, and other necessities while keeping their hands free for weapons. The use of rucksacks contributed to the mobility and efficiency of the Roman army, enabling them to maintain their endurance on the battlefield and during marches.