Watching EuroHockey lately, there were considerably more personal penalties for technical offences than I've seen before. Admittedly I usually play club hockey, and fouls for technical offences are generally due to poor skill. It got me thinking, when should a green, 5 minute yellow, and ten minute yellow, and even a red, be given to a player, and under what circumstances? Some offences I saw in the EuroHockey tournament, I've seen go without a personal penalty at club level. I understand the notion of, if a player repeats the same offence, they should be warned, green card, yellow card, etc. But are there any specific offences that warrant an automatic green card, five minute yellow, and ten minute yellow. Also, how do you differentiate between a five minute yellow and a ten minute yellow? Before anyone says it, I'm not going to go out next week and start flashing the cards for every technical offence on the field, I'm merely trying to improve my understanding of the game.