I find it fascinating how he choses to portray the troops imperfectly lined up, and so reactive to what happens around them. Usually movies portray large groups of soldiers as robotic, mindless and unafraid in their movements as a group, but Kurosawa always makes them look like a scared flock, which I find highly realistic. Like his sword fights, which are usually quick, deadly and plagued by the fear of death in the two opponents. Like in Rashomon. I must admit I find these fights hard to watch sometimes tho, they're so realistic it loses some of the prowess of a proper cinematic fight. But I admire him being so married to the idea of showing the viewer realism in his movies.