  We discuss the inclusion of next-to-next-to leading order electromagnetic and
of next-to leading order electroweak corrections to the leptonic decays of weak
gauge and Higgs bosons in the SHERPA event generator. To this end, we modify
the Yennie-Frautschi-Suura scheme for the resummation of soft photon
corrections and its systematic improvement with fixed-order calculations, to
also include the effect of virtual corrections due to the ex- change of weak
gauge bosons. We detail relevant technical aspects of our implementation and
present numerical results for observables relevant for high-precision Drell-Yan
and Higgs boson production and decay simula- tions at the LHC.
