  How the Milky Way has accumulated its mass over the Hubble time, whether
significant amounts of gas and stars were accreted from satellite galaxies, or
whether the Milky Way has experienced an initial gas assembly and then evolved
more-or-less in isolation is one of the burning questions in modern astronomy,
because it has consequences for our understanding of galaxy formation in the
cosmological context. Here we present the evolutionary model of a Milky
Way-type satellite system zoomed into a cosmological large-scale simulation.
Embedded into Dark Matter halos and allowing for baryonic processes these
chemo-dynamical simulations aim at studying the gas and stellar loss from the
satellites to feed the Milky Way halo and the stellar chemical abundances in
the halo and the satellite galaxies.
