  Galactic Archeology is about exploring the Milky Way as a galaxy by, mainly,
using its (old) stars as tracers of past events and thus figure out the
formation and evolution of our Galaxy. I will briefly outline some of the key
scientific aspects of Galactic Archeology and then discuss the associated
instrumentations. Gaia will forever change the way we approach this subject.
However, Gaia on its own is not enough. Ground-based complementary spectroscopy
is necessary to obtain full phase-space information and elemental abundances
for stars fainter than the top few percent of the bright part of the Gaia
catalogue. I will review the requirement on instrumentation for Gaia follow-up
that Galactic Archeology sets. In particular, I will discuss the requirements
on radial velocity and elemental abundance determination, including a brief
look at potential pit-falls in the abundance analysis (e.g., NLTE, atomic
diffusion). This contribution also provides a non-exhaustive comparison of the
various current and future spectrographs for Galactic Archeology. Finally, I
will discuss the needs for astrophysical calibrations for the surveys and
inter-survey calibrations.
