Texas A&M was opened in 1876 as a land grant college. At that point, the student body adopted a military structure, and the traditions of Aggieland took their roots.

http://sports.tamu.edu/traditions/index.html

The university has an enrollment of 44,081, and its colors are maroon and white. Its mascot is Reveille VII, a collie. http://sports.tamu.edu/facts.html

Texas A & M has its own lexicon, a glossary can be found here: http://sports.tamu.edu/traditions/terms.html

The Aggie fight song celebrates the military prowess of agricultural peoples (*heh*): The Spirit of Aggieland was written in 1925; the words by Marvin H. Mimms, a student, and the music by Col. Richard C. Dunn.

Some may boast of prowess bold
Of the school they think so grand,
But there's a spirit can ne'er be told
It's the spirit of Aggieland.

Chorus

We are the Aggies -- the Aggies are we.
True to each other as Aggies can be.
We've got to FIGHT boys,
We've got to FIGHT!
We've got to fight for Maroon and White.
After they' ve boosted all the rest,
They will come and join the best.
For we are the Aggies --
the Aggies so true,
We're from Texas A. M. U.

Second Chorus

T--E--X--A--S, A--G--G--I--E,
Fight! Fight! Fight! Fight! Fight!
Fight! Maroon!
White--White--White!
A--G--G--I--E, Texas!
Texas! A. M. U.
GIG 'EM AGGIES! 1! 2! 3!
FARMERS FIGHT! FARMERS FIGHT!
Fight -- fight --
Farmers, farmers, fight!

http://sports.tamu.edu/traditions/spirit.html