Improvised tactical vehicles of the Provisional IRA

Both pick-up and heavy flatbed trucks mounting automatic weapons, known in military jargon as technicals or non-standard tactical vehicles (NSTV),[5] were involved in a number of machine gun attacks on helicopters and security bases in Northern Ireland.[2] The IRA called them "mobile gun platforms".[6] The South Armagh Brigade made of these armed trucks their weapon of choice.[7] On 24 May 1985, a truck with two .50 Browning machine gun mounted on its back hit an RAF Wessex over Crossmaglen barracks. The helicopter was struck three times, The engagement ended with an exchange of fire between a military sentry in the base and the armed truck as it was driven away towards the border.[8] At the least one of the .50 Browning machine gun was allegedly recovered by the IRA from an Allied aircraft that crashed on Lough Neagh during World War II.[9] A press report suggests that the East Tyrone Brigade shot down a British Army Lynx near Clogher on 11 January 1990 using machine guns mounted on vehicles, which were spotted by the helicopter just minutes before the attack.[10] On 20 September 1990, a pick-up truck mounting two light machine guns and one heavy DShK machine gun engaged an Army Air Corps Lynx helicopter approaching Crossmaglen barracks on a resupply mission. The helicopter flew back to its base, but one soldier on the ground was wounded.[11] On 2 March 1991 another Lynx came under fire over Crossmaglen from a machine gun mounted on the back of a pick-up truck in an improvised armoured turret, supported by IRA volunteers with automatic rifles. There was no immediate reaction from British security forces although the joint RUC/Army base was just 50 yards away. The shooting was filmed by an RTÉ television crew who happened to be outside Crossmaglen's Health Centre.[12][13][14] One of the longest shoot outs between the IRA and British helicopters took place on 23 September 1993, in a running firefight involving flatbed trucks mounting machine guns, known as the Battle of Newry Road.[7]

The armed trucks were also used to attack security bases, as the above mentioned engagement at Crossmaglen in May 1985, or the ill-fated shooting on Coalisland security base by two East Tyrone Brigade units, one of them decimated in an Special Air Service (SAS) ambush during the getaway[15][16] and even against security forces' vehicles, like in the destruction of an armour-plated Ford Sierra carrying two RUC undercover constables on 20 October 1989, between Bessbrook and Belleeks, in South Armagh. One constable was killed in action as the Sierra blew out in flames.[17]

Vans' boxes were likewise adapted to mount concealed heavy machine guns and automatic weapons to engage personnel, other vehicles and security compounds. On 21 December 1978, a South Armagh Brigade van carrying an M60 machine gun protected with sandbags,[4] an armour plate,[18] and supported by other armed militants on foot, fired on a British Army patrol in Crossmaglen, killing three soldiers.[4] On 27 May 1994, a van carrying on five members of the East Tyrone Brigade and fitted in the same way with a heavy machine gun was driven to a point overlooking a British Army checkpoint manned by eight soldiers at Aughnacloy, and opened up harassing fire on the military facilities. The improvised tactical vehicle eventually fled to the border.[19] On 10 June 1997, just weeks before the final Provisional IRA ceasefire, an undercover British Army unit on a stationary van received small arms fire from IRA volunteers from the Derry Brigade[20] riding on another van on Foyle Road in Derry. No injuries were reported.[21]

Improvised armoured vehicles were also occasionally produced by the IRA. On 13 December 1989, an IRA flying column used an improvised armoured truck to storm a British Army checkpoint at Derryard, County Fermanagh, manned by members of the King's Own Scottish Borderers (KOSB). The vehicle, a Bedford TL,[22] armoured with reinforced sides, metal plates protecting the flatbed, sandbags and a crash bar, and mounting two heavy DShK machine guns and an LPO-50 flamethrower, was also transformed to transport a dozen men armed with AK-47 rifles, hand grenades and anti-tank rockets.[23] The armoured vehicle smashed through the gates of the compound, allowing the IRA volunteers to dismount and break inside the base, supported by the weapons of the improvised armoured carrier.[24] Two British soldiers were killed in action. In spite of the fierce exchange of fire, the British Army did not claim officially any hits,[24] though at least five shots seems to have struck the truck's rear.[23] A van bomb left by the assailants at the checkpoint only exploded partially. Despite a counter-attack by a patrol of the KOSB assisted by an RAF Wessex,[25] the heavy vehicle fled to the border, where it was disarmed, booby-trapped and abandoned by its crew.[23] The unarmed helicopter received fire from the armoured truck and was forced to disengage.[25] The British troops in Northern Ireland were equipped with Luchaire 40 mm anti-tank grenades after the assault.[23]

In 1992, the IRA planned a similar attack on a vehicular checkpoint, this time by delivering a huge bomb on a trailer towed by another armoured truck. The ploy was foiled when the Gardaí confiscated the vehicle in County Donegal.[26]

At least one car, a Mazda 626 wagon, used as a mobile platform for snipers in South Armagh in sixteen occasions from 1992 to 1997, was fitted with a metal plate to protect the shooter, hidden in the trunk, from return fire.[27][28] Author Toby Harnden listed another sniper vehicles like vans and jeeps armoured in the same guise.[18] British soldiers fired back on at least two occasions, both of them without consequences. British soldiers fired on the sniper on 17 March 1993 in the environs of Forkhill, after a successful attack in which a Royal Scots soldier was killed.[27] The other engagement took place at a British army mobile checkpoint near Newtownhamilton, on 31 July 1993.[29]

Mounting turrets were built in several cases on technicals to shelter DShk heavy machine guns an their operators.[23][30] In other incidents involving armed vans, the gunners were protected with sandbags[4] and armour plates.[18]

Excavators and bulldozers were sometimes employed by the IRA to tear down fences, walls and even observation posts. In 1972, a British Army watchtower at a timber yard in Belfast was tore apart by the bucket of an IRA excavator. There was no reaction and no casualties among the British troops.[31] On 11 July 1972 there was another attempt to destroy a military outpost with a bulldozer at Lenadoon, Belfast, during the Battle of Lenadoon. The machine carried a bomb in its bucket. An IRA volunteer crashed the heavy tracked vehicle into the observation post supported by small arms fire, but the device failed to explode properly.[32][33]

The most notable use of these vehicles was between 1986 and 1987 by the Lynagh unit of the East Tyrone Brigade, when diggers broke through the perimeter fences of the RUC barracks at The Birches and Loughgall, driven by IRA volunteer Declan Arthurs, who had experience in handling excavators in his family farm since his teen years. The machines carried huge bombs on their buckets in both occasions, and although the security bases were devastated by the explosion, the IRA unit was immediately ambushed and whiped out after the attack in Loughgall; eight of its members, among them Lynagh and Arthurs, were shot and killed by an SAS team.[34]

The South Armagh Brigade build up their attack on the Cloghoge checkpoint in May 1992 by lifting a Renault Master van converted into an improvised locomotive from the road to the railway with a stolen JCB tracked digger. The heavy machine was previously used to smash through the railway stone wall and pile up stones and wooden planks to construct a ramp to line up the van bomb with the rail tracks.[18]

In a report on a June 1994 Mark-15 single mortar attack on the RUC/Army barracks at Pomeroy by the East Tyrone Brigade, the IRA described a modified Range Rover driven from Turnabarson townland through an area heavily patrolled by the RUC and the British Army to carried out the operation as a "mobile mortar launcher".[35] The Mark-15 or "barrack buster" was the heaviest mortar developed by the Provisional IRA.[36] Transit vans were more commonly employed to fire light mortars like the Mark-6 or Mark-10. A number of tubes were strapped togheter and welded to the floor of the back of the van. A panel of the van's roof was cut away and covered over as a "hatch" to be open when the mortar bombs were launched.[1][37] These improvised launchers were used in some "spectaculars" incidents in Britain, such as the mortar attack on Downing street in February 1991 and the series of attacks on Heathrow airport in March 1994.[38][39] On 28 June 1996 three Mark-15 mortar bombs were launched from the trailer of an open Ford Transit van on Quebec Barracks at Osnabrück Garrison near Osnabrück, Germany, causing severe damage.[40]

The Mark-15 was carried to the firing point on a trailer or a hydraulic hoist pulled by a tractor in several attacks. The mortar was usually concealed in straw bales.[1][41] Sometimes the mortar was welded on the tractor's rear forks,[42] as in the shooting down of a Lynx helicopter over Crossmaglen barracks on 19 May 1994.[1] Some weeks later, on 12 July 1994, an RAF Puma carrying troops was hit and forced to crash-land on a football pitch at Newtownhamilton by the explosion of another tractor-launched Mark-15.[43] A truck was used instead as firing platform on a deadly Mark-15 attack on Keady RUC/Army barracks in South Armagh on 8 March 1993, when a civilian contractor to the British Army was killed and several others wounded.[44]

The IRA also employed trucks as mobile mortar launchers for Mark-10 mortars, as in the attack carried out on an RAF Wessex on 22 June 1983 over Crossmaglen. The helicopter flew away after jettisoning its cargo, and the base suffered some damage. One soldier was wounded.[45] Vans also acted like firing platforms against helicopters. as showed on the shelling of Crossmaglen base helipad on 11 June 1993 with a Mark-15 mortar, just seconds after an RAF Puma take off.[3] A Ford D truck[46] with nine mortar tubes bolted on sneaked its way from Crossmaglen through the streets of Newry to the firing point on the early evening of 28 February 1985. A single Mark-10 mortar bomb hit a portcabin in the local RUC base, killing nine constables, in what became the deadly mortar shelling during the conflict.[47] On 29 July 1994, two mortars launched from another truck hit again the security complex in Newry, this time wounding three soldiers, three RUC constables and 38 civilians.[48]

In addition to the conventional, stationary car bombs and their widely condemned variant, the proxy bomb, the IRA improvised unmanned and remote controlled vehicles to deliver large explosive devices on specific targets, On 3 September 1991, an IRA unit, after hijacking a number of tractors to block roads and taking hostages, forced one of them to drive a tractor carrying a trailer with a 3,600 kilograms (7,900 lb) bomb towards a hill ovelooking a British Army checkpoint near Rosslea, County Fermanagh, and then let the vehicle to roll down toward the facilities. The attack failed when the tractor overturned not far from its target due to the explosive device weight.[49][50] Another botched IRA bomb attack, this time using a remotely operated tractor occurred on 4 August 1993, when the vehicle, which also carried a dummy driver made of straw, swerved out of the road on its way to a British Army checkpoint in South Armagh.[51]

On 31 May 1991, an unmanned Mercedes truck loaded with a 1,100 kilograms (2,400 lb) explosive device was rolled down on a hill's slope aimed at an Ulster Defence Regiment (UDR) base at Glenanne, County Armagh. Three UDR soldiers were killed and the barracks utterly shattered by the explosion.[52] On the first hours of 1 May 1992, with the assistance of a tracked digger, as mentioned above, a 2,200 pounds (1,000 kg) railway bomb was remotely delivered by the South Armagh Brigade through an improvised locomotive, made of a dark-painted Renault Master van fitted with rail wheels. The target was a British Army checkpoint besides the Dublin-Belfast railroad at Cloghoge, south of Newry. The base was obliterated. A British soldier was killed in action and 23 others wounded in different degrees as a result.[18]

On 12 December 1992 a tractor was once again involved in an IRA operation, this time to transport a manure-spreader aimed at Borucki sangar, a fortified British army observation post alongside Crossmaglen town square. The spreader, converted into a makeshift flamethrower, pumped fuel oil to the sangar, at the time manned by members of the Scots Guards, and set it on fire. No injuries were reported.[53][54]

On 12 November 1993 a second improvised flamethrower attack was carried out on the same target, once more time by a tractor dragging a manure spreader, which sprayed the bunker with 1,100 imperial gallons (5,000 L) of petrol. Borucki sangar was then engulfed during seven minutes by a 9 metres (30 ft) tall fireball triggered by a small explosive device. The four Grenadier Guards inside the bunker had to be rescued by a Saxon armoured vehicle.[54][55]

• Technical (vehicle)
• Improvised vehicle armour
• South Armagh Brigade
• East Tyrone Brigade
• List of attacks on British aircraft during The Troubles
• Provisional IRA arms importation