The bodies of four young Kataeb members were found on 6 December 1975, while Pierre Gemayel was in Damascus; Muslims seized at makeshift checkpoints by the port were killed in reprisal. Accounts place the bodies in the Metn (Hanf), near Tal al-Za'tar (Haugbolle) or outside the electricity company offices (Fisk). De Clerck and Malsagne blame Joseph Saadeh, whose son was among the four. Only Fisk puts Bashir Gemayel in Damascus and cites Phalangist officers saying he ordered the reprisal. The Muslim dead number about 200 (Hanf, Traboulsi, de Clerck and Malsagne) or several dozen (Picard); Fisk gives at least 300 Muslims, and probably as many Christians, in the reprisals.

Hanf has the Syrian army moving again only once Tal al-Za'tar had fallen, increasing pressure on the encircled Palestinian and leftist forces in the Upper Metn; these were expelled at the end of September.

Historians disagree on 1976: Haugbolle ranks it among the war's largest emigration waves, while de Clerck and Malsagne see many returning that year after nearly 400,000 Lebanese had left by 1975. Haugbolle notes that no official figures exist.

From Sarkis's inauguration on 23 September Hanf counts three quiet days, the Semiramis Hotel attack in Damascus and a Syrian move two days after it, placing this offensive at about 28 September. The Palestinian and leftist forces lost the Upper Metn; Traboulsi notes that the Joint Forces' largest concentration, there under Abu Khalid al-Amleh, never engaged the advancing Syrians.

Ratified by an Arab summit in Cairo on 25 October, the Riyadh decisions required all parties to surrender heavy weapons and the Palestinians to return to the zones granted by the 1969 Cairo Agreement, and created a 30,000-man Arab Deterrent Force under President Sarkis, its largest contingent by far, 25,000-27,000 men, being the Syrian troops already in Lebanon. Saudi Arabia had sent the invitations on 15 October; the leaders of Saudi Arabia, Kuwait, Egypt, Syria and Lebanon met the PLO chairman in Riyadh on 16, 17 or 18 October, depending on the historian. The cease-fire's start is dated 16 October (Hanf), 21 October (Traboulsi) or 15 November (de Clerck and Malsagne).

APUR, the Atelier parisien d'urbanisme, drew up this 1977 plan, the earliest of three reconstruction studies made during the war.

Muslim leaders accused Hanna Saïd, commander since September 1975, of leniency towards the Lebanese Front (Traboulsi: of closeness to the dissident troops in the south). His replacement, Victor Khoury, a Constitutional Bloc sympathiser committed to Christian-Muslim coexistence, ran the army and its rebuilding from March 1977 to December 1982.

Hanf notes that in December 1977 Menachem Begin, Israel's prime minister, had excluded any return of the Palestinian refugees in neighbouring countries.

Hanf writes that the Lebanese Front was left with an enclave of roughly a tenth of Lebanon once Syrian troops had moved into the northern Christian mountains, Koura, Batroun and the coast as far as the Madfoun bridge. Frangieh gave Kataeb members in the north until the month's end to give up their weapons and quit the party, or else leave.

The Qaa massacre is dated to the night of 27-28 June (de Clerck and Malsagne) or to 29 June (Hanf); Ras Baalbek and Jdeidet al-Fakiha were also raided. De Clerck and Malsagne blame Syrians in civilian clothes, carrying name lists and guided by local Christian members of the SSNP and the Communist Party, and see the killings as revenge for Ehden. Hanf counts 26 dead, de Clerck and Malsagne 32 to 36. The community's Supreme Council asked that a day of national mourning be held.

According to de Clerck and Malsagne, the Security Council's call for a ceasefire came on 6 October.

The Saudis announced their departure in March 1979 (Ménargues). Picard has Syria's partners, among them Saudis, Sudanese and Emiratis, leaving two years after the 1976 summits; de Clerck and Malsagne call the ADF wholly Syrian from 1979.