this may be out of date...
http://www.usna-parents.org/resources/plebeyear.html#companies
During the academic year, the brigade is organized into two regiments. Each regiment has three battalions and each battalion is comprised of 5 companies. The Plebes are divided according to their company/platoon assignments over Plebe Summer. If they were in Company K-Platoon19 (Kilo Company) over Plebe Summer, they usually join the upperclassmen of Company 19 in the fall. Likewise if they were in A2 they will probably go into 2nd Company after Reform. The letter designation is dropped entirely after Plebe Summer. There are 30 companies in all. Each company has their own style, traditions and regulations. One company always decorates Tecumseh for I-day. Company 28 has a traditional croquet game in the spring with St Johns College. Here are some of the company nicknames past and present:
1 Fun One
1st Company - Youngsters are responsible for getting the Herndon monument ready for the plebes to climb. They grease it up with lard and write humorous saying in the lard for all to see.
2 Deuce
3 Thirsty Three, Third Herd
4 Delta Dogs
5 Five Baby Five
6 Slacker Six, Motel 6
7 Seventh Heaven, Sweat 7 ("no sweat")
8 Eight Ball
9 Cloud 9
9th Company - responsible for painting Tecumseh in his motivational colors for all occasions
10 Tool Time Ten / Turkey Ten
11 Tiger Company
12 Twelfth Reich
13 Lucky 13
13th Company - runs the football to the Army Navy game. 13th Company from West Point does the same.
14 Killa Bees, Phat 14, Flamin' 14, Friendly 14, 14th Co Tomcats
15 ???
16 Sweet 16 (also told, "none")
17 Nacho 17
18 Anal 18, No Marine 18, Barely Legal 18
19 Free 19
20 Tropical 20 , Aloha Know at 2.0
21 No Fun 21, Blackjack 21
22 Loose Loose, Double Deuce
23 Rock Hard 23 (unofficially, Predators)
24 Hard Core 24
25 Wu-Five, 25 Alive, Built to Survive 25
26 26 All Stars (also told, "none") 26th Civilian
27 Gamecocks (also, Fighting Gamecocks) The Herd
28 The Club, Fightin' 28
28th Company - Firsties are invited to play in the croquet match with St John's College. Mids wear their white uniforms, short blue jackets, look sharper than sharp. Townswomen come on 19th century long dresses, with parasols, and men in bowler hats and striped jackets. Picnics on the grass. Johnnies wear anything and everything.
29 29 Palms (unofficially, "War Pigs") Stand in Line 29
30 Dirty Thirty
At the end of Plebe year there is often a scrambling of Plebes to new companies. This process is referred to as
Shuffling: Moving the Plebes together from one company to another company. This keeps groups of Plebes together and moves them into a new set of upperclassmen. It can be helpful to returning Youngesters (Plebes-No-Mores) not to have to join the ranks of those who tormented them through Plebe year.
Shotgunning: Mixing the Plebes up among all the companies. With this scenario Plebes get a whole new group of company mates. They get scattered throughout the brigade irrespective of which company they came from.
Most years Plebes get shotgunned or shuffled. Occasionally Plebes stay with their original company into the following fall but usually they get moved around. Sometimes other years get moved as well.