On the military side, street fighting is also known as one of the most complicated types of fighting, because of the limited space, complex attacks, difficult fire support and troublesome cleaning. Especially for the attacker, it often includes the attack point, close-range tunnel warfare, and unknown terrain and enemy situation, and it is easy to be ambushed and shot by the enemy, including many tunnel wars in recent decades, and the attacker has paid a heavy price. In the process of liberating the motherland, the PLA also encountered many hard urban battles. For example, in Linfen Campaign, the 23rd Brigade of the Eighth Column of the First Corps of North China Field Army won a great victory, and the Central Military Commission named it Linfen Brigade. Mao Zedong praised the Linfen Campaign as "a pioneering work in the city's tough battle". Today, the exquisite struggle banner of Linfen Brigade is still a brigade of 7 1 Army in the Eastern Theater.

CH-902 ultra-close UAV can carry out three-dimensional penetration reconnaissance and determine key targets such as enemy command posts and artillery positions. It is worth mentioning that the US military is also in the process of preparing for this hand-released small drone. The largest plane is RQ- 1 1 Raven UAV, weighing 2 kg, which can fly continuously for more than an hour.

In the Middle East, this advanced portable drone is used by American soldiers to detect roadside bombs and raise their awareness of danger. CCTV's software Face to Face with Weapons has added every other similar equipment used by our army-KVB 206 ultra-close unmanned throwing machine. The aircraft adopts hand-throwing take-off and gliding landing maneuvers, with small length and light weight, weighing 2.2kg, typical length 1037mm, wingspan 1288mm, top 28 1mm, reconnaissance radius 10km, infrared camera and single flight operation time/kloc. When it comes to urban combat environment with many houses and obstacles, drone throwing has great advantages.