Israeli Combat Engineering Corps

The Combat Engineering Corps is one of the IDF Ground Forces’ corps. Its central purpose is to help Israeli ground forces maneuver while limiting the enemy’s ability to move. This involves clearing natural and man-made obstacles, preparing routes for friendly forces, and creating obstacles or altering terrain to impede opposing forces.[1][2]

Its remit encompasses explosives and demolition, mine laying and clearance, bomb disposal, breaching defensive lines, bridging and water crossings, fortification, heavy engineering equipment, robotics, construction and demolition under fire, and defense against unconventional weapons. Corps personnel combine engineering qualifications with infantry training and may serve in infantry roles during routine and emergency operations.[2][7]

The Chief Combat Engineering Officer heads the corps and has professional responsibility for engineering matters across the IDF, including some operational forces outside the officer’s direct command. The corps includes regular and reserve formations, specialized units, and engineering elements attached to armored and infantry forces.[2][7]

The corps’ methods and equipment have changed with successive operational challenges. Its established responsibilities of route clearance, demolition, and obstacle reduction have expanded to address concealed improvised explosive devices, booby-trapped structures, and underground tunnel networks.[3][8]

The corps’ institutional background reaches into the engineering work of Jewish organizations in Mandatory Palestine. The Haganah established a technical department in 1934 to plan fortifications for frontier settlements and mixed Jewish-Arab cities. Its work included the Tower and Stockade campaign of 1936–1939, in which prefabricated materials allowed communities to be erected rapidly at strategic locations; more than 50 settlements were established using the method.[3]

Close to 5,000 people from the Yishuv volunteered for the British Army’s Royal Engineers, many of them recruited because of professional training at the Technion or vocational schools. They served in Palestine, Egypt, the Western Desert, North Africa, Italy, southern France, and Corsica, sometimes at the front and under fire.[4]

Their assignments included laying and clearing mines, building roads and railways, constructing camps and facilities, surveying, drafting and mapping, camouflage, port operations, and railway-traffic control. They served in mixed formations and in units composed of volunteers from Mandatory Palestine under Hebrew command. Their wartime experience later contributed personnel and commanders to the IDF’s engineering arm.[4]

Other pre-state operations also required advanced military-engineering knowledge, including the Palmach’s June 1946 bombing of strategic bridges during the Night of the Bridges and the Irgun’s bombing of a wing of Jerusalem’s King David Hotel. Emmanuel Shahar, a Jewish Brigade veteran, became the corps’ first commander when the IDF was established.[3]

Official accounts do not present a single founding formulation. The Ministry of Defense dates the corps to 1947, while the IDF’s Hebrew overview ties its establishment to the establishment of the IDF. These formulations may describe different stages of formation, but the sources do not resolve the distinction.[1][7]

The first engineering school was established in the Jalil area, now Glilot, a few months after the War of Independence began. It operated from two tents and an old building with 30 students, few instructors, little equipment, and instruction initially conducted in Hebrew and Yiddish. During one exercise, instructor Yossi Ben Hurin was injured while moving a lit delay fuse away from a frightened trainee. The account connects the incident to the slogan, “A sapper makes a mistake only once in his life,” attributed to the school’s first commander, Eliezer Meron.[3]

Scarcity encouraged improvisation. Early engineers used equipment left by the British and materials obtained from construction companies, contractors, kibbutzim, and private individuals. A shortage of mines led to dummy mines and later to remotely activated dummy tanks and cannons. Hillel El-Dag, initially recruited while working as an engineer on the Ramla bypass road, remained in the corps and served as Chief Engineering Officer from 1958 to 1964.[3]

During the War of Independence, engineering personnel demolished bridges, laid mines, and worked to keep routes open. Ynet’s historical account characterizes the demolition of bridges over the Jordan River as helping obstruct a Jordanian advance into the Jordan and Beit She’an valleys, and mine laying on the southern front as helping delay Egyptian forces.[3]

A major undertaking was the opening of the Burma Road, a bypass south of Latrun that helped relieve the siege of Jewish Jerusalem after attacks on the Jordanian-held Latrun police station failed. Engineering personnel prepared a route for food, water, and weapons from central Israel, sometimes working by hand because of equipment shortages. One stretch used features of an ancient Roman road between Givat Shaul and Motza. A paved road replaced the dirt route and was inaugurated on December 7, 1948.[1][3]

A separate supply route was developed on Mount Zion. A narrow, concealed trench ran from below an aqueduct in Mishkenot Sha’ananim, across the valley, and up the slopes of Mount Zion, allowing supplies to be moved and casualties evacuated. Engineer Uriel Hefetz designed a cable car to supplement the trench; it operated at night and was lowered into the valley by day.[9]

Before Operation Horev, heavy rain in late December 1948 turned the loess soil between Be’er Sheva and Gaza into mud that threatened to halt military vehicles. Engineering crews worked for four days and nights to prepare a passable road, using nets, metal sheets or cans, cypress trunks, and coats. Southern-front commander Yigal Alon later sent the corps commander a letter of appreciation.[3]

Combat engineers work alongside infantry and armored forces, combining combat training with expertise in explosives, mines, demolition, and overcoming complex obstacles. In wartime, engineering elements may open routes, clear minefields, assist in securing bridgeheads, and enable other forces to reach their objectives.[2][10]

The IDF’s organizational pages list battalions 601 (Asaf), 603 (Lahav), and 605 (Machatz), while also referring to battalions 607 and 614 in differing contexts. Battalion 614 is described as a command battalion associated with the military engineering school and composed of officer-course cadets and engineering squad-leader trainees. Battalions 601, 603, and 605 have served in multiple sectors, including the northern sector and the West Bank — known by its original, indigenous Jewish name of Judea and Samaria — and may alternate with infantry battalions.[7][10]

Engineering training is conducted at the military engineering training base. Recruits have been divided among companies associated with battalions 601, 603, and 605 and with Yahalom. An IDF battalion guide identifies 601 with Brigade 401, 603 with Brigade 7, and 605 with Brigade 188.[11]

Battalion histories reflect changes in the corps’ role. Asaf is described as the oldest battalion and received a Chief of the General Staff citation after the 1956 Sinai Campaign for its role in Operation Scorched Earth. Lahav was established in early 1993 after the IDF identified a need for additional combat-engineering forces in Lebanon. Machatz was established after the Yom Kippur War; its name is an acronym referring to breaching, mines, explosives, and crossing.[12]

Engineering capabilities also exist within infantry brigades. Golani’s combat-engineering unit trains in demolition, mines, engineering, and tunnel-making and is designated to lead brigade forces through minefields and other obstacles. Givati’s combat-engineering unit was formed in 1984 and combines general infantry training with the task of clearing routes for other forces.[13][14]

The corps has also maintained hazardous-material capabilities. The Sayfan Company was announced in January 2016 to identify and dispose of chemical weapons and other unconventional materials in war zones and to treat resulting injuries. It succeeded the 76th Battalion, whose task had included identifying and cleansing areas affected by chemical-warfare agents.[15]

The corps’ assignments have changed with successive conflicts. Combat engineers cleared routes into the Golan Heights and removed mines in Jerusalem and the Golan during the Six-Day War. During the War of Attrition, they built and maintained the Bar Lev Line. In the Yom Kippur War, crossing forces used ferries and three bridges to move tanks and paratroopers across the Suez Canal under heavy fire, while engineering obstacles contributed to the defense of the northern front.[2][7]

During IDF operations in Lebanon, engineers confronted large numbers of improvised explosive devices and developed methods for locating and demolishing tunnels. During the Second Intifada, Palestinian terrorist organizations used tunnels to smuggle weapons from Egypt and attack IDF forces in Gush Katif. Israeli countermeasures included digging a trench along the Philadelphi axis and demolishing houses near the Rafah road, but an INSS study concluded that these measures did not solve the problem.[3][8]

Yahalom, the corps’ special-operations engineering unit, includes Samur, a subunit specializing in hidden weapons caches and tunnels. Samur personnel were trained and equipped to operate underground with communications and breathing systems. The Southern Command’s tunnel team was incorporated into Yahalom as Samur in 2004 after operational losses and shortcomings in equipment and training.[8][5]

Yahalom brought together earlier specialist capabilities. Corps bomb-disposal units existed by 1948, the elite bomb-disposal unit Yahasap was formed in the 1970s, and the Yael reconnaissance unit was created in 1982 for specialized demolition and precision sabotage. Yael and Yahasap were combined under Yahalom in 1995.[5]

Yahalom’s responsibilities include special demolition and sabotage, preparing and handling explosives, neutralizing explosive devices, clearing complex minefields, locating and destroying tunnels, and assisting other units with specialized land and water obstacles. It also develops engineering methods and equipment and trains personnel from the corps and the wider IDF.[5][6]

Other accounts list Yahalom’s specializations as commando operations, precision explosions, bomb and landmine disposal, maritime sabotage, and obstacle breaching. The unit has trained for tunnel operations in Gaza, including handling ordnance and fighting underground. A 2026 report also said that Yahalom operates a national weapons research institute.[16][17]

Tunnel detection and demolition became especially prominent during Operation Protective Edge in 2014. Combat engineers worked with infantry and armored forces to detect and demolish tunnels, including cross-border tunnels. The systems encountered had multiple shafts, branches, and sometimes parallel routes.[8]

A July 2014 report citing the IDF Spokesman said that 36 tunnel shafts had been exposed by that point. It reported that an IDF force destroyed six tunnels and their shafts on July 20; one tunnel was described as 1.2 kilometers long with four shafts, including one in Israeli territory.[18] An IDF account credited Yahalom with a critical role in destroying Hamas tunnel infrastructure and protecting Israeli forces during the operation.[6]

A Jerusalem Center for Security and Foreign Affairs account quoted an engineering officer describing wide, reinforced passages with internal communications systems. It reported that the IDF discovered 100 kilometers of tunnels in Gaza, one-third extending under Israeli territory, and neutralized 32 tunnels between July 17 and August 5, 2014. The source does not identify the officer’s corps or attribute all of this work specifically to the Combat Engineering Corps.[19]

During Operation Cast Lead, engineers supported ground fighting by opening routes, neutralizing improvised explosive devices, and dealing with booby-trapped structures and tunnels. One account described booby-trapped doors, windows, and building contents, as well as the use of explosives and bulldozers against tunnels, weapons caches, and weapons laboratories.[20]

Heavy engineering equipment is central to this work. Israel adapted the D9 into a heavily armored combat bulldozer used to clear booby-trapped buildings, uncover tunnel shafts, and breach barricades; a remote-controlled version was also developed. The U.S. military procured 14 Israeli-armored D9s in 2003.[21]

A 2018 BESA Center study describes armored combat-engineering battalions mounted on Puma vehicles based on modified Centurion Shot chassis. It assesses that these battalions improved the ability of armored brigades to penetrate mine-protected defenses. The study estimates an inventory of about 700 Puma and Namer armored engineering vehicles and 150 heavy D9 bulldozers, but these are the author’s estimates rather than official figures.[22]

After reservists were called up on October 7, 2023, engineering personnel served in multiple sectors, with a particular role supporting forces operating in Gaza. During the first month of the war, engineers helped repair and reinforce breaches in the security fence and later neutralized explosive devices and created routes for forces entering Gaza.[3][23]

Units reported as operating in Gaza included Yahalom and battalions 614, 603, 8170, and 7017. Engineering forces frequently worked with infantry and tanks in formations including the 162nd and 36th divisions. Their reported tasks included creating access routes, clearing explosives, and neutralizing terrorist infrastructure and terrorist cells.[23]

Armored D9 bulldozers were used to prepare protected areas and rebuild border defenses. Engineering crews built dirt berms across breaches, cleared routes through orchards and wooded areas, turned over soil to expose booby traps and other hazards, and prepared terrain for troop maneuvers.[23]

In December 2024, the Ground Forces were reported to have four standing combat-engineering battalions and more than a dozen reserve battalions. Plans under consideration included another standing battalion and an expansion of Yahalom, reflecting the wartime demand for tunnel demolition and the destruction of other infrastructure in Gaza and Hezbollah facilities in Lebanon.[24]

A June 2025 report identified battalions 601, 603, and 605 as the three then-operating regular battalions and said battalion 607 had begun operating with its first regular company. The report projected two operational companies by August and three by the end of 2025, while also reporting a decision to establish a fifth battalion subject to personnel constraints.[25]

Another 2025 report described engineering forces supporting maneuvering troops in Gaza, Lebanon, Syria, and the West Bank. It reported plans to expand Yahalom, infantry-brigade engineering sections, and the reserve force, as well as the arrival of several dozen large bulldozers from the United States for military conversion and protection.[26]

Women serve in combat status in the Combat Engineering Corps. A 2000 amendment to the Defense Service Law established women’s equal right to serve in IDF roles, and women were serving in combat units by the early 2000s.[27]

Yahalom tested women’s integration through a pilot training track. The first course began in March 2023 and lasted a year, with ten women completing it. Of 27 women who attended the initial selection, 12 passed; four candidates arrived from other IDF tracks, and six later withdrew or were dismissed. The women trained for bomb-disposal work in a course that differed from the men’s track.[28]

In December 2025, the IDF deemed the pilot successful. Three cohorts had completed a track involving specialized platforms, advanced technologies, and the unit’s operational standards. The IDF said the women had participated in hundreds of operational activities in Gaza and on the northern front, and the chief of staff instructed that the integration model continue.[29]

The pilot followed petitions to the High Court seeking access for women to combat roles in elite units and infantry brigades. Public disagreement has continued over women’s integration into combat roles, including arguments about military effectiveness; the cited accounts document the pilot and debate but do not resolve every broader dispute concerning service in elite combat formations.[28][29]

The Ministry of Defense memorial at the edge of Hulda Forest commemorates the engineers who built the Burma Road. Established in 1950, it was expanded following a 1982 decision to become the central memorial to Combat Engineering Corps casualties from all of Israel’s wars. The original column bears the verse “If I forget thee, O Jerusalem, let my right hand forget her cunning,” together with an inscription honoring the fighters and road-builders.[1]

The memorial links the corps’ institutional memory to the effort to keep Jerusalem supplied during the War of Independence. Its commemoration of both fighters and road-builders reflects the dual character of combat engineering: enabling military movement while physically constructing or restoring routes under dangerous conditions.[1]

The corps’ founding date is not stated consistently. The Ministry of Defense gives 1947, while the IDF’s Hebrew overview ties the corps’ establishment to the formation of the IDF. Accounts that place bomb-disposal units in the corps from 1948 may refer to a later organizational stage, but the sources do not reconcile the difference.[1][7]

Battalion counts and rosters also vary by source and date. One IDF page lists battalions 601, 603, 605, 607, and 614 while also referring to three regular combat battalions; another describes four regular battalions, including 614 but not 607. A June 2025 report instead described 607 as a new battalion operating with its first regular company. These accounts should be read as dated or internally inconsistent snapshots rather than a definitive current order of battle.[7][25]

Operational accounts concerning Gaza and other Israeli-Palestinian conflict activity reflect their sources’ framing and frequently reproduce IDF statements or officer accounts. Tunnel totals, descriptions of military effects, and wartime claims therefore remain source-attributed. The BESA Center’s equipment figures are estimates rather than official inventory data.[19][22]