The 4th Army Division (Spanish: IV División de Ejército) is a combined infantry division unit of the Peruvian Army (EP) that specialized in combat patrol in mountain forest terrain, combined arms, counterinsurgency, military engineering, and jungle warfare.

The unit was officially established by the Peruvian Joint Command as the VRAE Military Region (Spanish: Región Militar del Valle de los ríos Apurímac y Ene) on 13 March 2008.

[5][6] Its jurisdiction is limited to the Apurímac–Ene Valley Area, having been specifically created in order to deal with narcoterrorism and cocaine production in the area, where much of the drug trade is controlled by remants of the Shining Path guerrilla group.

[5] In 2016, on the eve of that year's general election,[8] the division's 311th Counterinsurgency Battalion, part of the 31st Infantry Brigade, was ambushed by Shining Path insurgents, leaving 11 dead and 5 wounded.

[9] The unit's coat of arms features two crossed Galil rifles.