Seki Nobuhide Sensei, a martial arts and katana instructor, rates portrayals of samurai battles in movies and TV shows. He explains why samurai employed different types of spears in battle in "Shogun.

After a thrilling stretch battle ... last place and took charge in midstretch, but Jolly Samurai unleashed a resolute bid on the outside to wear down the front-runner then thrust out his neck in ...