  We present the exact and explicit solution of the principal chiral field in
two dimensions for an infinitely large rank group manifold. The energy of the
ground state is explicitly found for the external Noether's fields of an
arbitrary magnitude. At small field we found an inverse logarithmic singularity
in the ground state energy at the mass gap which indicates that at $N=\infty$
the spectrum of the theory contains extended objects rather than pointlike
particles.
