Formation The
Lebanese Civil War began in 1975. Three years later, the
Palestine Liberation Organization occupied much southern Lebanon in an attempt to raise an army and destroy the state of Israel.
Israel invaded in 1982 and shattered the PLO, but occupied southern Lebanon and created a Christian proxy militia, the
South Lebanon Army (SLA), to hold the territory. A narrow strip of land running the length of the Israeli border was termed the "security zone." Lebanese Shia, driven by a desire to gather forces to fight the Israeli occupation of southern Lebanon, founded Hezbollah (the Party of God) in 1982, with the organization being named and reorganized in 1985. In 1982, hundreds of
Islamic Revolutionary Guard Corps (IRGC) from Iran traveled to Lebanon's rugged
Bekaa Valley and began training various Shiite groups, including
Islamic Amal and the
Dawa Party. these choices imposed a heavy cost on Hezbollah in casualties and in public opinion. The CIA says that prior to spring 1986, Hezbollah's attacks were more "undisciplined acts of desperation" rather than military actions. and to a few thousand in 1985. In mid-1986, Hezbollah massed 5,000 fighters for an event in the town of Baalbek in the Bekaa Valley. At this time, Hezbollah had many part-time fighters and very few full-time members, Hezbollah also received backing from pro-Hezbollah factions of Amal that had split from top Amal leadership. while an independent review says that by 1987 Hezbollah's strategic position was deteriorating. In May 1987, Hezbollah began to coordinate infantry and artillery as
combined arms, and "improved their capability to attack Israeli helicopters, and demonstrated improvements in extracting wounded from the battlefield." Originally, Hezbollah was just one of several militias fighting the Israelis, but by 1985 it was preeminent. By the late 1980s, it was clearly dominant. In May 1988, after years of rivalry and clashes, Hezbollah waged a brief but intense
war with Amal for control of Beirut's southern suburbs, which at the time contained about one-quarter of Lebanon's population. As Amal was allied with Syria, Hezbollah clashed with the Syrian Army troops occupying Lebanon at that time. Hezbollah won in the streetfighting and escalated to targeted assassinations and encouraging defections, forcing Amal to seek Syrian mediation. Amal and Hezbollah have remained begrudging allies ever since. After Hezbollah prevailed militarily, they soon imposed harsh
Sharia law on their territory, such as banning coffee and unveiled women, and lost the
hearts and minds of their people.
1990s Hezbollah improved rapidly in the early 1990s, progressing from losing five fighters for every Israeli soldier killed in 1990, to 1.5 in 1993, a ratio that roughly held till the end of the decade. Hezbollah ended human-wave attacks in 1990 and began conducting attacks with two units: an assault team and a fire support team with 81 mm mortars. Accumulating combat experience was critical to this improvement in tactical proficiency. Hezbollah in the early 1990s performed dedicated staff work, mirroring their Israeli adversaries. During the late 1980s and early 1990s, Hezbollah refocused on quality over quantity, substantially improved training, IEDs were the main source of Israeli casualties during the occupation period. The conflict saw the first major use of unguided Katyusha rockets fired onto IDF occupied Israeli areas by Hezbollah, a tactic used by the PLO a decade before and became a defining practice of Hezbollah in the future. Hezbollah started seriously developing anti-tank tactics in 1997, with a focus on being able to hit the same spot on a tank multiple times to defeat Israel's sophisticated reactive armor, a tactic that remains a part of Hezbollah's repertoire today. like IEDs, mortars, and small ambushes. This was probably Hezbollah's first expeditionary endeavor. Hezbollah continued to find suicide attacks morally acceptable, but phased their usage out because they were no longer tactically effective. Hezbollah launched just four suicide attacks in the 1990s. During the 1990s, Hezbollah particularly targeted Shiite conscripts in the SLA for defections, desertion, or intelligence. Along with Hezbollah's use of
PSYOPS and propaganda warfare, this led to plummeting morale within the SLA. Hezbollah performed 100 attacks from 1985 to 1989 and 1,030 attacks in the six-year period from 1990 to 1995. It launched 4,928 attacks from 1996 to 2000, Hezbollah considers 1998, 1999, and 2000 to be their most successful years of insurgency. In 1997 and 1998 combined Israeli and SLA casualties exceeded those of Hezbollah. Hezbollah continued to study Israel and adopt to lessons learned, and the group spent a large amount of effort gathering information about Israel. In 2006 Hezbollah pursued an asymmetric, integrated standoff fires and area-denial strategy. Hezbollah launched rockets onto populated Israeli areas and cities while using light infantry, bunkers, and anti-tank teams to defend southern Lebanon and attack the
IDF. Hezbollah focused on small self-sufficient units, based in villages, providing home-front attrition with a somewhat effective command-and-control structure and low mobility. Hezbollah was willing to fight from villages and other civilian areas, which while a violation of the laws of war, was tactically advantageous. Hezbollah identified their main shortcoming in the 2006 war as their lack of air defenses, which they considered a "serious problem" and their main task to address. Hezbollah rated the performance of their bunkers and camouflaged firing positions in fenced off "security pockets" in rural areas as worthwhile. Following the war, the IRGC-QF increased transfers of materiel, funding, training, and intelligence sharing. As a hybrid actor, Hezbollah's main weakness is its need to maintain civilian support to hide among the population, while causing great harm to civilians if war breaks out. This causes Hezbollah to have to justify its actions to maintain public support and to avoid war.
Syrian Civil War Since 2012, Hezbollah has engaged in a military deployment to Syria to fight for the Assad government in the ongoing civil war. In terms of both casualties and total manpower, this is Hezbollah's largest ever military operation. Estimates vary widely, from about 1,500-8,000, Hezbollah uses short deployments in Syria, around a few weeks to a month. Although some sources suggest that Russia and Hezbollah are cooperating closely, other sources say they have strategic differences and are not cooperating closely. The party's exposure to sophisticated Russian doctrine, EW capability, airpower, and combined arms could improve the party's capabilities, but also deter it by demonstrating the power of Israel. The organization has improved its ability to operate with other
Iranian-aligned forces and bettered its ability to conduct sustained operations outside of Lebanon in varied terrain. and their performance in this battle is considered good. Later, the group would take heavier than expected casualties leading the
Battle of Aleppo, and Iran reportedly replaced it with the
Badr Organization. Despite this, Hezbollah remains the most capable and trusted Iranian-aligned group in Syria, and generally maintains control of most Shiite militias in Syria and Afghan and Pakistani foreign fighters. the war has served as a powerful recruiting drive among Shia youth and has resulted in the preservation, to date, of the Assad government. According to former Shin Bet chief
Avi Dichter, Hezbollah's combat experience in Syria "has made [them] a better fighting force and more adept in conventional military warfare." Although Hezbollah's intervention in Syria has "strengthened and battle-hardened" the group, it has also redirected resources away from Israel and reduced the group's standing among Lebanese
Sunnis. with one rebel commander describing Hezbollah as "the number one [government] fighters in Syria." Newsweek writes that Hezbollah as a whole is stronger than the Syrian government. Their fighters are noted to stop SAA soldiers from looting and pillaging. Hezbollah changed from "a small cadre of militants" into a semi-military organization and a regional military actor.
Hezbollah–Israel conflict (2023–present) Hezbollah's capabilities were severely weakened during the
Hezbollah-Israel conflict (2023-2024), also known as the "Support War" or the "Gaza Support War" in Arabic. Despite
a ceasefire agreement reached in November 2024, Israel
continued to launch airstrikes in Lebanon almost every day, killing 331 people (at least 127 of whom were civilians) by November 2025. Later, the death toll surpassed 500. Hezbollah violated the cease-fire by strengthening its military infrastructure and armaments. == Training ==