DETECTIVE SERGEANT" Lugs " Brannigan is probably the most famous policeman in Ireland today. He is admired by most young Gardai as an example of what they, minus his features, would want to be. I remember a young Guard telling me that he had , just heard that Brannigan had put six people in St. Vincent's Hospital an hour earlier. The young garda seemed to think this an exemplary achievement. The force admires him for his fearsome reputation in Dublin and his image as a good, fearless cop.