By 1991, the CPP central committee had assessed the mistakes of the previous decade and carried out the Second Great Rectification Movement from 1992 until declaring a success in 1998. The Second Great Rectification Movement, however, saw splits in the CPP ranks, with rejectionists such as Filemon Lagman, Romulo Kintanar, Etta Rosales, and others leaving the CPP and forming their own groups based on ideological differences. The Alex Boncayao Brigade, notorious for its partisan activities, left the CPP with Lagman and formed the Revolutionary Proletarian Army.