The word "He" refers to the horse. The horse paws the ground because he is very excited to begin the fight. Alternate translation: "He paws with excitement and" (See: [[rc://en/ta/man/translate/figs-explicit]])
Here "the weapons" represent the battle in which they are used. Alternate translation: "to join in the battle" (See: [[rc://en/ta/man/translate/figs-metonymy]])