We consider the Cauchy problem for the Korteweg-de Vries-Burgers
equation. Global existence and smoothing effect for the Cauchy problem to
the Korteweg-de Vries-Burgers equation
was proved previously for the case
of large initial data. Recently the first term of the large time
asymptotics was obtained without restriction on the size of the initial
data. The aim of the present paper is to obtain the second term of the
large time asymptotic behavior of solutions to the Cauchy problem for the
Korteweg-de Vries-Burgers equation
in the case of the initial data of arbitrary size.