  A Lagrangean and a set of Feynman rules are presented for Non-Relativistic
QCD with manifest power counting in the heavy quark velocity $v$. A r\'egime is
identified in which energies and momenta are of order $Mv$. It is neither
identical to the ultrasoft r\'egime corresponding to radiative processes with
energies and momenta of order $Mv^2$, nor to the potential r\'egime with on
shell quarks and gluons providing the Coulomb binding. In this soft r\'egime,
gluons are on shell, and the quark propagator becomes static. Examples show
that it contributes to one- and two-loop corrections of scattering and
production amplitudes near threshold. The results are readily generalised to
any effective field theory with more than one low energy scale.
