The ”Eugen Kvaternik“ Training Range near Slunj on 6 October 2015 hosted the “Joint Force“ exercise – a  live-fire demonstration exercise, and the largest one conducted by the Croatian Armed Forces since the Homeland War.
The Exercise involved over 1000 members, representing all units of the Croatian Armed Forces (630 in the exercise itself, 398 in support and 28 in the Exercise Headquarters). Furthermore, it has been the first four-dimension exercise undertaken – on land, sea, air and in cyber space. The Exercise was designed and conducted by the General Staff and its directly subordinated units, alongside the Croatian Army, Air Force and Navy units, logistic units and special forces.
The objective was to demonstrate the Croatian Armed Forces’ integrated capabilities and the new systems and equipment successfully introduced into operational use. 
The Exercise was attended by the Defence Minister Ante Kotromanović, the Chief of the General Staff of the Croatian Armed Forces, General Drago Lovrić, the commanders of the services of the Croatian Armed Forces, general officers,  senior officials of the Ministry of Defence, cadets, the Rector of the University of Zagreb, the University professors and others.
Minister Kotromanović extended congratulations and appreciations to the organising staff of the Exercise. ”We intended to demonstrate at this point that the Croatian Armed Forces are fully prepared to perform their duties in accordance with the Constitution, as much as they are ready to take part in the missions conducted worldwide“, said the Minister.
The Chief of the General Staff of the Croatian Armed Forces, Drago Lovrić emphasised the Exercise was the Joint Forces was the largest exercise of the Croatian  Armed Forces conducted in the peacetime period. ”We have today demonstrated the Croatian soldiers integrating all capabilities and prepared to defend the territory of the Republic of Croatia. The new integrated battle doctrine of the Croatian Armed Forces and a new military strategy are being drafted, and the Exercise served to test the possibilities“ , General Lovrić emphasised the role of the Navy, whose filmed operation in the  “Dugi otok“ Naval Range was displayed in the monitors during the Exercise.
“The presented was an integrated operation of the RBS-15 missiles and the artillery  at sea, demonstrating the capability of the Croatian Navy, along with its Coast Guard functions relating to migrant rescue  and counter-piracy operations, to conduct combat operations to protect the Croatian territory and to destroy any sea and land targets at up to 80-km distance“, said General Lovrić.
The Exercise involved the mechanised infantry battle group, augmented with a MRLS battery, a tank battalion, a M-ATV vehicle platoon and a 82- mm mortar platoon, two missile boats, two MiG-21 aircraft,  Mi-8 transport helicopters and the Mi-171Š multi-purpose helicopters of the Croatian Air Force and Air Defence; the Special Forces Command forces, lne snage iz Zapovjedništva specijalnih snaga, vod elektronskog izviđanja Središnjice za obavještajno djelovanje, vod Vojne policije Pukovnije Vojne policije, tim za kibernetičku obranu sastavljen od pripadnike Uprave za komunikacijsko-informacijske sustave i Središnjice komunikacijsko-informacijskih sustava, skupina za kontrolu kretanja i desetina za rukovanje gorivom Zapovjedništva za potporu. 
The Exercise was kicked off by the protection of the communications and information systems from a cyber attack by the adversary force, and continued by MIGs engaging the land communication centre. The Special forces launched a direct attack on high-value targets, supported by two Mi-171 Sh  helicopter, supported by the artillery elements (the 82-mm, the 120-mortars, the Howitzers and MRLS) and the anti-armour elements; the mechanised forces  performed manoeuvre ___; along the attacks, enemy neutralisation and target seizing, the Exercise featured aerial evacuation of the wounded members  and logistic operations controlled and regulated by the Military Police platoon.