The anger of the soldiers here is being compared to that of a mother bear who cubs are taken from her. Alternate translation: "they are angry, like a mother bear whose cubs have been take from her" or "they are very angry" (See: [[rc://en/ta/man/translate/figs-simile]])
This means that his has fought in many battles and knows well the ways of war. Alternate translation: "has fought in many battles" (See: [[rc://en/ta/man/translate/figs-explicit]])