  We consider Yang-Mills theory with N=2 super translation group in ten
auxiliary dimensions as the structure group. The gauge theory is defined on a
direct product manifold \Sigma_2\times H^2, where \Sigma_2 is a two-dimensional
Lorentzian manifold and H^2 is the open disc in R^2 with the boundary
S^1=\partial H^2. We show that in the adiabatic limit, when the metric on H^2
is scaled down, the Yang-Mills action supplemented by a Wess-Zumino-type term
becomes the Green-Schwarz superstring action.
