Yes, samurai warriors in feudal Japan did indeed use katanas as their primary and most iconic weapon. The katana is a traditional Japanese sword with a curved, single-edged blade, a circular or oval guard (tsuba), and a long grip (tsuka) that can accommodate two hands.

The katana held great importance in samurai culture and warfare. It was renowned for its cutting ability, balance, and versatility. The curved shape of the blade allowed for effective slicing and slashing motions, while the length and weight of the sword enabled powerful strikes.

The katana was the symbol of the samurai class and played a central role in their training, martial arts, and combat strategies. Samurai warriors underwent rigorous training to master the techniques associated with the katana, including various cuts, thrusts, parries, and footwork.

The katana's craftsmanship was highly regarded, with expert swordsmiths dedicating considerable skill and knowledge to forge these weapons. Katanas were made using a special type of steel known as tamahagane and underwent a complex process involving multiple layers of folding and differential hardening to achieve a sharp, durable blade.

Samurai typically wore their katana slung from their waist with the cutting edge facing upward. The katana was a samurai's primary weapon and was used in battlefield engagements, duels, and personal defense. It symbolized their status, honor, and skill as warriors.

It's important to note that the katana was not the only weapon utilized by samurai. They often carried a shorter companion sword called the wakizashi, forming the daisho pair. The wakizashi served as a backup weapon and was used in situations that called for a more compact blade, such as indoor combat or close-quarters encounters.

In summary, the katana was the iconic and primary weapon of samurai warriors in feudal Japan. Its design, craftsmanship, and effectiveness in combat made it an integral part of samurai culture and martial arts.