  We study $\mathcal{N}=1$ supersymmetric Yang-Mills theory (SYM) on the
lattice. The non-perturbative nature of supersymmetric field theories is still
largely unknown. Similarly to QCD, SYM is confining and contains strongly bound
states. Applying the variational method together with different smearing
techniques we extract masses of the lightest bound states such as gluino-glue,
glueball and mesonic states. As these states should form supermultiplets, this
study allows to check whether SYM remains supersymmetric also on the quantum
level.
