He argues that in the Russian archives there are five versions of the general plan for the strategic deployment of the Red Army and ten documents reflecting the development of plans for operational deployment of western military districts. The differences between them were slight, all documents (including operational maps signed by the Deputy Chief of General Staff of the Red Army) are the plans for the invasion with depth offensive 300 km. Solonin also states that no other plans for Red Army deployment in 1941 have been found so far,[67] and that the concentration of Red Army units in Western parts of USSR was done in direct accordance with the May "Considerations on plan for strategic deployment":