Groups normalized by the odd unitary group

We will give a definition of quadratic forms on bimodules and prove the sandwich classification theorem for subgroups of the general linear group $\mathrm{G}\mathrm{L}(P)$ normalized by the elementary unitary group $\mathrm{E}\mathrm{U}(P)$ if $P$ is a nondegenerate bimodule with large enough hyperbolic part.