An equation, we call Dirac gamma-equation, is introduced with the help of the
mathematical tools connected with the Clifford algebra. This equation can be
considered as a generalization of the Dirac equation for the electron. Some
features of Dirac gamma- equation are investigated (plane waves, currents,
canonical forms). Furthermore, on the basis of local gauge invariance regarding
unitary group, a system of equations is introduced consisting of Dirac
gamma-equation and the Yang-Mills or Maxwell equations. This system of
equations describes a Dirac's field interacting with the Yang-Mills or Maxwell
gauge field. Characteristics of this system of equations are studied for
various gauge groups and the liaison between the new and the standard
constructions of classical gauge fields is discussed.