After an interim period under British control from December 1979 to April 1980, the RLI briefly remained active within the armed forces of the internationally recognised Republic of Zimbabwe, but did not see action under this government.
The war intensified strongly during the late 1970s as further attempts for diplomatic resolution failed, leading to yet more regular Fireforce actions, operations outside Rhodesia's borders and heavier casualties for the RLI.
The RLI had been experimenting with parachutes sparingly since 1967, but the process of training the entire regiment in their use did not start until November 1976, when two troops from 1 Commando underwent instruction at New Sarum Air Base in Salisbury.
[1] To prevent themselves from becoming easy targets for ground fire, the RLI paratroopers would jump from low altitudes so they would be in the air for as short a time as possible.
[6] ZANLA, the military wing of the Zimbabwe African National Union (ZANU), had been led by Robert Mugabe since his and Nkomo's release from prison in December 1974 as part of an abortive ceasefire deal.
ZIPRA planned to eventually use this army, which was trained by Cuban and Soviet officers, to overtly invade Rhodesia and engage the security forces in the field.
[8] The RLI took part in Operation Aztec between late May and early June 1977, working alongside the Rhodesia Regiment (RR) and the Selous Scouts.
A three-pronged Rhodesian attack on FRELIMO and ZANLA staging posts just over the border in Mozambique's Gaza Province was planned to restrict the guerrillas' infiltration into Rhodesia's south-east.
[9][10] The operation began on 28 May 1977, at dusk, when 72 Selous Scouts crossed the border near Vila Salazar on a bush track, dressed in FRELIMO uniforms, driving 14 FRELIMO-pattern vehicles and commanded by Major John Murphy, an American Vietnam veteran.
The flying column was easily spotted by 2 Commando because of the manner of their advance; the extremely aggressive Scouts were firing into any position that could potentially be an ambush as they moved, sending huge plumes of dust into the air at regular intervals.
[9] Murphy discovered that the main ZANLA base had been moved to Mapai, a village with an airstrip on the Nuanetsi River to the south-west, and diverted his force to attack it.
"[9] The men who remained at Jorge do Limpopo resolved to set up an ambush position in a patch of tall trees to the north of the town, as nowhere else nearby provided any cover.
As most of the air force had now returned to Rhodesia, with the remaining helicopters supporting the column, the RLI men felt abandoned, in the open and somewhat nervous.
Rich decided to proceed with the plan to set up the ambush in the trees and call for assistance regarding the cadres, reasoning that attacking now would only get his men killed.
At dawn on 30 May, Rich decided to stay in their pocket in the trees and await reinforcements rather than attempt a rash break-out into open enemy territory, which would surely result in their own massacre.
Rich's men were now able to call air support, which arrived minutes later in the form of Hawker Hunters, "our saviours",[9] says Swan; the planes showered the guerrillas with SNEB rockets and 40 mm cannon fire, causing them to retreat back to Jorge do Limpopo.
[10] The next morning, on 31 May, the Rhodesians at Mapai blew up the damaged Dakota to avoid its discovery by the United Nations, which had warned Rhodesia to keep its troops out of Mozambique.
[10] Meanwhile, the RLI men in the pocket near Jorge do Limpopo, though dangerously low on food, equipment and weapons, held out for two more days without loss, killing several more cadres who attempted to overrun their position.
[9] United for the first time during the operation, 2 Commando returned to Jorge do Limpopo (which the Scouts had retaken) and helped engineers plant explosives all over the town on anything the guerrillas might find useful as the Rhodesians prepared to withdraw.
The elimination of Mozambique's railway in Gaza Province, for example, harshly limited the transfer of ZANLA fighters, equipment and stores from the Mozambican ports to the Rhodesian border.
[11] November 1977's Operation Dingo, a joint attack by the RLI and SAS on ZANLA camps in Mozambique at Chimoio and Tembue, is retrospectively described by P. J. H. Petter-Bowyer as an "astounding success".
[n 3] Following the country's reconstitution and recognised independence as the Republic of Zimbabwe in April 1980, the final parade of the RLI and the ceremonial laying-up of its colours took place at Cranborne Barracks on 17 October 1980.
The commanding officer J. C. W. Aust, recalled being amazed by the large crowd of spectators surrounding the parade square, including the former government minister P. K. van der Byl, who attended unannounced.
A Rhodesian Air Force Alouette III helicopter also arrived overhead during the ceremony and in Aust's words "circl[ed] in a moving salute and farewell".