  The symmetries of the Standard Model give rise to the forces that act on
particles, and the corresponding force mediators. While the Standard Model is
an excellent description of particle interactions, it has known limitations; it
is therefore important to search for new physics beyond the Standard Model,
potentially indicating as-of-yet unknown symmetries of nature. The ATLAS and
CMS collaborations have detailed physics programmes, involving a large number
of searches for new physics in hadronic final states. As the start of Run 3 of
the LHC is imminent, now is a good time to review the progress made and the
status of hadronic searches during Run 2 at a centre-of-mass collision energy
of 13 TeV. This review provides an overview of the motivations and challenges
of hadronic final states at the LHC, followed by an introduction to jet
reconstruction, calibration, and tagging. Three classes of searches for new
physics in hadronic final states are discussed: di-jet searches, searches for
missing transverse momentum in association with another object, and searches
for hadronic di-boson resonances. The complementarity of these different
analysis strategies is discussed, emphasising the importance of a varied
hadronic physics programme in the search for new physics.
