In ice hockey, an alternate captain (often called assistant captain) is a player who, should the captain be absent, fulfill the captain's responcibilities.
According to National Hockey League rules, the sole official duty of a captain is to be the only player who is allowed to talk with referees about rule interpretations or poor calls.
Captains are usually veterans or the most veteran player on the team, and can be from any position except that of the Goaltender.
The alternatecaptains wear an "A" on their jerseys, (from 1975-85, NHL clubs didn't have alternatecaptains).
North American amateur hockey codes, such as those of Hockey Canada and USA Hockey, tend to be a hybrid of the NHL and IIHF codes, while professional rules generally follow those of the NHL.
The National Hockey League was formed in November of 1917, when members of the former National Hockey Association were engaged in a dispute with one of their fellow owners over insurance proceeds.
Sledge hockey was invented by three Swedish wheelchair athletes on a frozen lake at a rehabilitation centre in Stockholm in 1961.