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4th Infantry Division (Philippines)

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Country  Philippines
Type  Infantry
Branch  Philippine Army
4th Infantry Division (Philippines)
Active  January 03, 1942 – January 14, 1946 (as 4th Infantry Division, PCA) January 15, 1946 – Present
Role  Conventional Warfare, Anti-Guerrilla Operations
Size  3 Brigades, 6 Battalions, 6000+ soldiers

The 4th Infantry Division, Philippine Army, known officially as the Diamond Division, is one of the Philippine Army's Infantry units in Northern Mindanao.


The 4th Infantry Division, Philippine Commonwealth Army during the Battle for the Liberation of Manila

Started the Battle for the Liberation of Manila on February 03, to March 03, 1945 between the Imperial Japanese forces and the combined American and Philippine Commonwealth troops. The 4th Infantry Division of the Philippine Commonwealth Army was sending the military operations around the capital city in February 1945 to aid the local resistance fighters and American ground troops in fighting the Imperial Japanese forces under Navy Admiral Sanji Iwabuchi. This included the Battle of Intramuros on February 23, to February 26, 1945.

The 4th Infantry Division, Philippine Army during the Post-War Era

On January 15, 1946 right after the World War II, upon the reestablishment of the Commonwealth Government, all Military Districts were converted to military areas; Pursuant to Section 1 General Orders Number 46 of HAFP dated January 8, 1946. The 1st and 2nd Military Areas (IMA-IIMA) was in Luzon, while 3rd Military Area (IIIMA) in the Visayas, and the 4th Military Area (IVMA) in Mindanao. The remaining forces of the 10th MD were absorbed to Military Police Command (MPC) based at Camp Overtone, Iligan.


4th Infantry (Diamond) Division conducts internal security operations to dismantle four (4) priority New People's Army fronts and degrade three (3) priority New People's Army areas in Caraga region and portion of Region 10 by 2009 to attain a physically and psychologically secure environment conducive to continuous development.


  • 401st Infantry (UNITE n FIGHT) Brigade
  • 402nd Infantry (STINGERS) Brigade
  • 403rd Infantry (PEACEMAKER) Brigade
  • Battalions

  • 8th Infantry (DEPENDABLE) Battalion
  • 23rd Infantry (MASIGASIG) Battalion
  • 29th Infantry (MATATAG) Battalion
  • 30th Infantry (PYTHON) Battalion
  • 36th Infantry (VALOR) Battalion
  • 26th Infantry (EVER ONWARD) Battalion
  • 58th Infantry (DIMALULUPIG) Battalion
  • Service Support Units (SSU)

  • Camp Evangelista Station Hospital (CESH)
  • Headquarters and Headquarters Service Battalion (HHSBn)
  • Service Support Battalion (SSBn)
  • 4th Division Training School (4DTS)
  • 4th Army Training Unit (4ATG)
  • 10th Field Artillery Battalion (10FAB)
  • Civil Military Operations Battalion (CMOBn)
  • 10th Forward Service Support Unit,ASCOM, PA (10FSSU)
  • References

    4th Infantry Division (Philippines) Wikipedia

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