A Russian farmer caught on video commanding a bunch of ducks to get in line and follow him into a barn might make the most effective Marine drill instructor ever. The video shows a man emerging from his barn, shirtless. He then crouches down, screams, and gets an entire flock of ducks into line in seconds before leading them into a barn. Total time: 30 seconds. [HTML1] If he can lead waterfowl like that, imagine what he could do with recruits. Compare the king of the ducks to new recruits at Marine Corps Recruit Depot San Diego. It takes three Marines…