The central hypothesis and the one with the widest support is that Stalin had simply decided to consolidate his power by eliminating any and all potential political or military rivals. Viewed from the broader context of the Great Terror which followed, the execution of the most popular and well-regarded generals in the Red Army command can be seen as a preemptive move by Stalin and Nikolai Yezhov, People's Commissar of State Security, to eliminate a potential rival and source of opposition to their planned purge of the nomenklatura. The fall of the first eight generals was swiftly followed by the arrest of most of the People's Commissars, nearly all regional party secretaries, hundreds of Central Committee members and candidates and thousands of lesser CPSU officials. At the end, three of five Soviet Marshals, 90% of all Red Army generals, 80% of Red Army colonels and 30,000 officers of lesser rank had been purged. Virtually all were executed.