[1][2] Under the leadership of Obad Zouein, the breakaway group comprised Aziz Torbey, Samir Nassif, and Fawzi Mahfouz (also known as 'Abu Roy') – all were former militants of the Kataeb's youth section and veterans of the 1958 Lebanon crisis – who decided therefore to create an underground paramilitary organization to support the Lebanese Army in the defense of the Country.

3- The quality of men and women the Tanzim was looking for, and this reflected a lot on the clean reputation that the group maintained throughout the war, as well as having the lowest casualty rate, despite having its militia spearheading many difficult military engagements, mostly due to their mobility along the front.

[12] Unlike the main Christian factions, the Tanzim was one of the few ideologically-committed groups – other than the Guardians of the Cedars – that never tried to establish its own fiefdom or canton, nor appears to have been involved in illegal financing activities such as drug trafficking or racketeering.

MoC/Tanzim militiamen were provided with a variety of small arms, including Mauser Karabiner 98k, Lee–Enfield SMLE Mk III and MAS-36 bolt-action rifles,[16] MP 40, M1A1 Thompson and MAT-49 submachine guns, M2 carbines, MAS-49,[16] M1 Garand (or its Italian-produced copy, the Beretta Model 1952), vz.

Fierce and disciplined fighters, they were involved in the January–August 1976 sieges and respective battles of Dbayeh, Karantina and Tel al-Zaatar refugee camps in East Beirut, allied with the Army of Free Lebanon, Tigers Militia, Kataeb Regulatory Forces, Guardians of the Cedars, Lebanese Youth Movement and the Tyous Team of Commandos.

[17] Tanzim militiamen made their first public appearance in May 1973 at Beirut during the Bourj el-Barajneh clashes, when the Lebanese Army High Command indirectly called them to assist regular troops in preventing PLO guerrillas from entering Army-controlled areas.

The discipline and organizational abilities displayed by the MoC at the opening months of the civil war, allowed the movement to engage in the formation of the Christian rightist parties and militias alliance that eventually would become in January 1976 the Lebanese Front.

Conversely, its 200-strong Tanzim militia,[19][20] led jointly by Fawzi Mahfouz and Obad Zouein, saw the heaviest street fighting ever in East Beirut,[21] including the Battle of the Hotels and the sieges of Karantina and Tel al-Zaatar.

Hence by March 1976 the Tanzim ranks swelled to 1,500 armed men and women backed by a small fleet of all-terrain vehicles or technicals and some transport trucks fitted with heavy machine-guns, recoilless rifles and Anti-Aircraft autocannons.

Integrated into the Lebanese Forces in 1977, Tanzim's militiamen later again played a key role in the eviction of the Syrian Army out from the Christian-controlled East Beirut in February 1978 during the Hundred Days' War, where they manned the Fayadieh-Yarze sector of the Green Line.

With the political demise of the Lebanese Front in the late 1980s, the LRM began to take part in the foundation of the Central Bureau of National Coordination – CBNC (Arabic: المكتب المركزي للتنسيق الوطني | Al-Maktab al-Markazi lit-Tansiq al-Watani), best known as Bureau Central de Coordination Nationale (BCCN) in French, an umbrella organization regrouping several small, predominantly Christian political groupings and associations that rallied in support for General Michel Aoun's military interim government, with members of the Tanzim Commanding Council Roger Azzam and Pierre Raffoul rising to the leadership of the new force.

Despite this, many former Tanzim members chose to remain in Lebanon and continued to carry out their militancy within the BCCN throughout the 1990s, later helping in the establishment of the Free Patriotic Movement (FPM), a wider anti-Syrian Christian political coalition led behind the scenes by the exiled Aoun.