After the 1984
Battle of Laoshan, China decided to conduct training and practical exploration in the form of rotating the major military regions into the Laoshan area for defensive operations. from 30 April 1986, the Lanzhou Military Region began to take over the Yunnan Front Command, assuming the task of defensive operations in Laoshan.
Chinese preparations On 30 April 1986 troops belonging to the Lanzhou Military Region entered the front line of Laoshan to take over the defence of the
Jinan Military Region. The 47th Army Group Commander
Qian Shugen selected the 604th position and the 968th high ground as the main targets during the combat meeting. The 11th Army of
Kunming Military Region, the First Army of
Nanjing Military Region and the 67th Army of Jinan Military Region had successfully attacked the 968th high ground three times and achieved certain results. Highland 968 was one of the more contested areas for both sides and the PAVN were quite sensitive to the defensive mentality. The choice of this area as the target for the first strike had the significance of dampening the morale of the PAVN and maintaining military pressure, while also allowing for initial battle practice on more familiar terrain. In addition, unlike the previous rotations by the Kunming, Nanjing and Jinan Military Districts, the
Lanzhou Military Region came to Yunnan with not only infantry and artillery, but also an electronic countermeasures battalion directly under the military district. This was the first time that the PLA's electronic countermeasures soldiers were deployed to the front line of combat. To improve the PLA's defensive posture, the 47th Army Group's military headquarters resolved to take the 139th Division's 416th Regiment's 5 companies (5 companies of special merit) to strengthen the 6 companies' 3 platoons, the regiment's reconnaissance platoon, the regiment's engineer company's ground-burst platoon, and the division's ground-burst company's 2 platoons, with the support and cooperation of the artillery, electronic countermeasures section (detachment), and feint detachment, relying on forward positions, choose a favorable time to take a combination of frontal attacks and flank penetration, small formations, multiple waves, and The tactical means of continuous attack, fighting and suppressing at the same time, quick and total annihilation, captured the 604th position and 968th high ground, completely annihilated the defending enemy, destroyed the fortifications, waited for the opportunity to capture prisoners, collected the spoils of war and withdrew as ordered. At the same time the electronic countermeasures detachment invested a total of 5 ultra-shortwave 100-watt jammers, eight 40-watt jammers, twelve S207 receivers, 1 monitoring panorama receiver, 4 sets of shortwave 1600-watt jammers, 2 400-watt jammers, two 150-watt jammers, 3 bilateral band listening vehicles, 1 set of IBM PC/XT microcomputers; 171 troops (including 52 cadres and 119 soldiers) were invested. The unit was composed of 2 forward sub-groups, 1 basic group and 1 rear group. The group occupied 11 positions, including Basho Ping, No. 10 and 1175.4 heights in the direction of Balihe East Mountain, Mahei, No. 52, No. 50 and No. 49 positions, Tzhuiba, Lushui-dong, Anle and Xialaiyuan in the direction of Laoshan Mountain. Personnel of the Group Army Electronic Countermeasures Command Group (Military Region Electronic Countermeasures Working Group) entered the Group Army Command Post and 139th Division Forward Command Post and Jamming Group Command Post respectively. ==Battle==