I  - UNIT/DATE OF ORGANIZATION/PRESENT STATION:  The 20^th Infantry (WE LEAD) Battalion formerly known as 20BCT was activated on 06 September 1950.  The unit is temporary base ATPPA terminal, Brgy Salvacion, San Isidro, NSamar with Charlie Coy co-located with it and designated as the Centurion Coy of the unit. Alpha Coy is temp situated at Brgy Bunga, Motiong, WSamar while Bravo Coy established its Coy CP at Brgy Armenia, Uson, Masbate.

  At present the Battalion operates under the supervision and control of 803^rd Infantry Brigade of the 8^th Infantry Division, Philippine Army confronting local communist movement in above stated areas.

 II  - CHANGES IN ORGANIZATION:  When 20CBT returned from Korea to its native land, the unit was assigned in Bulacan Province and later deactivated in 1957.  On September 1958, 20BCT was again activated further assigned with the 1^st Infantry (TABAK) Division at Fort Magsaysay, Palayan City.  After five (5) years with the 1^st Infantry (TABAK) Division, the unit was reduced to a Cadre strength and assumed the task of training the 20 years LD military registrant.

 During the resurgence of rebellion in Central Luzon, the unit was reorganized on 07 January 1963 to meet the threat.  Its regular strength was increased to 85% of its authorized troop ceiling.  The unit displayed its exceptional training and combat readiness in line with contemporary forms of warfare.  On April 1978 the unit was re -designated as Mechanized Infantry Battalion after undergoing Mechanized Infantry Training In Camp Aquino Tarlac Pursuant to General Orders Nr 71 HPA dated 01 April 1978.  On 1980 the unit was again ordered to undergo retraining at Camp Aquino Tarlac for the purpose of redeployment in Samar and was re-designated as an Infantry Battalion.

On 16 June 1986, the Battalion was absorbed by the newly activated 8^th Infantry Brigade (SEPARATE) later become 8^th Infantry Division, Philippine Army.  On 16 April 1996 the Battalion left the 8^th Infantry Division AOR and sailed to a new destination in Mindanao and placed operational control under Task Force Southern Mindanao (TFSM).  Upon the deactivation TFSM on 20 Jan 1997 the unit was placed OPCON to 601^st Infantry Brigade under 6^th Infantry Division, Philippine Army.  On 19 August 1998 the unit left 6^th Infantry Division area and was redeployment in Caraga Region placed OPCON with 401^st Infantry Brigade under 4^th Infantry Division, Philippine Army with AOR covers Agusan Del Norte and Surigao Del Norte.    

 III  - CHANGES IN STATION:  On 06 September 1950 20BCT was activated immediately and underwent rigorous training to replace 10BCT as part of the Philippine contingent to the united nations expeditionary Forces to Korea after a year stint in Korea, 20BCT returned to the Philippines on 08 August 1952.  Thereafter the 20BCT established its base at Plaridel in the Province of Bulacan and was tasked on the internal stability campaign.  It was in 1957 when peace and order was restored in the area that 20BCT was pulled-out and later deactivated sometimes in 1957.

 In the early part of September 1958 20BCT was reactivated, it was assigned with the 1^st Infantry (TABAK) Division at Fort Magsaysay, Palayan City on 01 February 1961 the unit transferred its Hqs at Tres Crusez, Tanza Cavite.  On 17 May 1963 its command post was again deployed at Cagutud, Arayat, Pampanga right in the heart of Huklandia.

 After crushing the Huk Rebellion, the country faced another dissident movement the CPP / NPA.  On its outbreak, the unit was transferred to Palanan, Isabela as part of the “Task Force Palanan” with its command post located at the much publicized Digoyo point with its AOR the municipalities of Palanan, Divilacan, Maconacon and Dinapigue all of Isabela Province.

 On 28 September 1972 elements of this unit crossed the thickly forested Sierra Madre mountain led by then COL JUAN RESMA from Suplit, Palanan to San Mariano.  On January 1978 the battalion was relieved from its Command Post to under Mechanized Infantry Training in Camp Aquino Tarlac.  After the training. The unit was again deployed in Bataan with command post located at Roosevelt, Dinalupihan, Bataan.

 In 1980, the unit went on retraining at Camp Aquino, Tarlac before its deployment in Visayas Island especially in the province of Samar during 1^st Quarter of 1980.  The unit was again re-designated as an Infantry Battalion with its initial station at Dolongan, Basey, Western Samar covering 13 municipalities of Western Samar and subsequently transferred to Barangay Parasanon, Pinabacdao, Western Samar.

 On 13 September 1988, the unit was redeployed to Southern Leyte in line with GHQ Campaign Plan “LAMBAT BITAG” with its HQS at San Juan, Southern Leyte covering 14 municipalities.  After succeeding in dismantling the Southern Leyte fighting front of the CPP / NPA, the unit was redeployed in Northern Samar on 11 March 1991 and reestablished its Battalion command post at Brgy Urdanita, Lavezares, Northern Samar.  The unit covers 17 municipalities four (4) of which were island towns.  The unit was tasked to secure the gateway of Visayas and Mindanao thru Leyte and Samar with specific objectives of dismantling the political structure and the destruction of the main force of the DTs in the area.

 On 16 April 1996 the battalion left its base in northern Samar and sailed to a new destination in Mindanao.  Upon arrival at General Santos City, the unit was placed under the control of Task Force Southern Mindanao (TFSM) and tasked to secure the Palarong Pambansa thereat.

 On 26 April 1996 the unit relieved in place another Battalion at Sta Cruz, Davao Del Sur with the whole province of Davao Del Sur as it new AOR.  On 20 January 1997 the unit expanded its AOR with addition of Sarangani province and placed OPCON with 601^st Infantry Brigade.  With its new AOR the unit faced the challenges of confronting different threat groups such as dissident terrorist, secessionist group and local bandits.

Following the realignment of units AOR in the 6^th Infantry Division, 20IB AOR was readjusted on 28 January 1998 with Sarangani Province taken by another Battalion, while Davao Del Sur and four (4) municipalities of North Cotabato were assigned as its new AOR in its new AOR, the unit faced challenges in confronting the notorious guerilla front 51 that was then very active in the areas at the foot of MT APO.

 On 19 August 1998 the unit left Davao Del Sur area and was redeployed in Caraga Region covering Surigao Del Norte and Agusan Del Norte established its Battalion Command post at Brgy Bliss, Kitcharao, Agusan Del Norte and placed OPCON with the 401^st Brigade, 4^th Infantry Division. When the 401^st Bde move to Lanao area the unit is placed OPCON to 402^nd Brigade, 4^th Infantry Division.

 On 28 September 2003 in line with the 4^th Infantry Division Campaign Plan apocalypse bravo and the coming of 401^st Brigade controlling the area of Agusan Del Norte and Surigao Del Norte. The battalion headquarter was relocated at Brgy Sta Cruz, placer, Surigao Del Norte vacating the area of Butuan City and Agusan Del Norte to 30^th Infantry Battalion, 4^th Infantry Division except two Municipalities of Agusan Del Norte namely; Kitcharao and Jabonga. On 16 March 2004, 20^th Infantry Battalion displaced its AOR in Caraga Region and returned back to Samar on 22 March 2004 and placed OPCON with 801st Brigade and finally with the 803^rd Brigade. 

 IV  - SIGNIFICANT ACTIVITY: The unit replaced 10BCT in Korea and participated in numerous battles most notable were the battles of alligator jaw ridge (WEST OF CHORWON) and Battle of Jamestown line. Although some of its personnel were wounded and eight were killed in action.  The unit successfully won in its campaigns.

 In recognition to its sterling performance and indispensable contribution to the war, the unit was awarded the Philippine - South Korea Citation Badge.

 When 20BCT returned to its native land, the unit participated in the pacification campaign in the province of Bulacan.  The fighting ability of its personnel resulted to the disorganization and neutralization of the insurgents (HUK) movement likewise, the unit neutralized several HUK commanders including the notorious commander Tony, the HUK chieftain of Pampanga, the recovery of assorted high powered firearms and enemy materials that pave way to the eventual break up of the HMB in that part of the country.

When the unit was in the province of Isabela, it was instrumental in the frustrated landing of arms and ammunition by M/V Karagatan and M/V Merly intended for the rebels at Digoyo point; the recovery of 17 m14 rifles with 21 mag pouches and 75 magazine after encounter   the rebels at vicinity hill 225, a forested area in Sierra Madre Mountains. Assorted combat equipments were also recovered during the encounter.

 On March 1975, elements of Bravo Company under 2LT BARROSO was encountered at Brgy Dicamay uno, Jones, Isabela that resulted to the recovery of four (4) cal .30 LMG, assorted rounds of HPFAS and voluminous subversive documents.

 On October 1975, Juanito Canlas @ Popoy the regional secretary of Cagayan Valley Command of the CPP / NPA was arrested in Manila.  During the Battalion “campaign against the subversive elements and several members of the party returned to the folds of the law.

 After the retraining in Tarlac on 1980, the unit was redeployed in Samar and during its eight (8) years of stint in the area, the unit displaced exemplary performance in its Counter – Insurgency Campaign and maintained the highest form of discipline and dedication to duty and was awarded the Best Battalion in Civil-Military Operations of the 5^th Infantry Division, Philippine Army for 1983.  On 13 September 1988, when the unit was redeployed in Southern Leyte and within a span of two years, the unit succeeded in the dismantling of the CPP-NPA fighting front by inflicting heavy enemy casualties, the recovery of 57 affected Brgys the surrender and capture of 20 party branch members, 2 NPA regulars, 399 SMA and 2,122 CT mass base supporters.

 On 11 March 1991, the Battalion was transferred to northern Samar and where the unit was adjudged as the Best Battalion for Intelligence Visayas Wide.  In 1994, the Battalion was rated number two in the 8^th Infantry Division wide and one of the top ten Battalions in the whole Philippine Army.

The aggressive triad campaigns of the unit made Northern Samar peaceful and another challenge for the battalion arise when the unit was transferred in Mindanao area on 16 April 1996.  While on its new AOR in Davao Del Sur and part of North Cotabato, the unit launched massive combat and intelligence operations targeting the terrorist dissidents armed groups and leaders. On 02 March 1998 the efforts bore fruits when the Battalion raided an NPA safe house and arrested the infamous and notorious head of the guerilla front 51, Amado Payot @ Benzar. 

 Once more the 20^th Infantry (WE LEAD) Battalion proved its worth in serving our country & people when it was adjudged as best Infantry Battalion of the 8^th Division for CY 1997-1998.

 On 19 August 1998 the unit was redeployed in Caraga Region covering Surigao Del Norte and Agusan Del Norte. During its stay in the area, the Battalion had launched Intensified TRIAD Operations that resulted to some remarkable accomplishments such as; the successful ambush by the operating troops against 20 fully armed NPA at Brgy Perida, Alegria, Surigao Del Norte on 16 Feb 1999 that captured one (1) wounded amazon identified as Jelyn Dayong and the recovery of five (5) HPFAs; the neutralization of Abelardo Magpatoc @ secretary of front north 16, North Eastern Mindanao Regional Party Committee (NEMRC) during the failed attack at Mayag Detachment on 17 Feb 2002; the raid at Brgy Maraiging, Jabonga, Agusan Del Norte on 28 October 2003 that resulted to the captured of two (2) amazon namely Arlene Natad Amarille @ Maylyn and Melody Lauro Larong @ Em-Em both member of DIST F16, FN 77 and the recovery of seven (7) HPFAs; the raid at Brgy Tagbayani, Sison, Surigao Del Norte on 24 July 2003 that resulted to the neutralization of four (4) CTS, one captured and the recovery of assorted firearms; the neutralization of notoruios Arnulfo Mayordo @ Kulas / Ben Laden a former CT member on 03 September 2003 and the neutralization of Eusebio Dumaguit @ Iraq the CT leader and two other companion on 01 January 2004.