It would be the act of an arch pedant to point out that, at least according to the instructions on SCM, the figures are 1943-1945, the scheme for the BM-13-16 itself is 1942, and the schemes for the W.O.T.6 are not only from 1944/5, but don’t include the Soviet Union. I guess we have to assume that they're still relevant...or do that 'own research' thing.
Decals might be irrelevant for some Soviet vehicles, but plenty of photographic and model examples (ironically including ICM!) exist indicating otherwise. A simple set to tie these together, and make this more of a cohesive, rather than thrown-together, bundle would've been appreciated.