Corporal Cadbury understands English rather well. He can't speak English, but Jama can apparently understand his trills, purrs, and meows, and swears he talks to her. Cadbury is also rather adept at finding other ways to communicate.
This Power Skill sort of works like Charm and sort of like Mind Control. Basically it allows Cadbury to entice people into forgetting what they are doing and start paying attention to him. This might range from giving him a treat to a full-body brush down. Cadbury is far too smart to use this Skill on Jama... everyone else is fair game.