Almost at the same time, the United States is also developing infrared night vision devices, although the successful test time is later than Germany, but it is the first to put it into practical application. In the summer of 1945, the U.S. military landed and attacked Okinawa Island. The Japanese army hidden in the caves took advantage of the complicated terrain and came out at night to attack the U.S. military. So the U.S. military urgently transported a batch of newly manufactured infrared night vision devices to Okinawa, and mounted the guns with infrared night vision devices near the cave. The Japanese army inside the cave, not knowing the reason, continued to rush out, and lost their lives in a confused way. When the infrared night vision device first entered the battlefield, it played an important role in clearing the stubborn Japanese army on Okinawa Island. The active infrared night vision device has the characteristics of clear imaging and simple production, but its Achilles heel, the infrared light of the infrared searchlight will be discovered by the enemy's infrared detection device. In the 1960s, China first developed a passive thermal imager, which does not emit infrared light and is not easy to be discovered by the enemy, and has the ability to observe fog and rain. From April to June 1982, the Malvinas Islands War broke out between the United Kingdom and Argentina. In the middle of the night on April 13, the British army attacked Port Stanley, the largest stronghold of the Chengjun army. A minefield laid by 3,000 British troops suddenly appeared in front of the Afghan defense line. All guns and artillery in the UK are equipped with infrared night vision devices, which can clearly detect the targets of the Afghan army in the dark. However, the Arab army lacked night vision goggles and could not detect the British army, only passively beaten. Under the accurate attack of the British firepower, the Afghan army could not support it, and the British army took the opportunity to launch a charge. By dawn, the British had occupied several major commanding heights on the Afghan defense line, and the Afghan army was completely under British fire control. At 9:00 p.m. on June 14, 14,000 Afghan troops had to surrender to the British. The British Army's lead in infrared night vision equipment has won a disparity battle. In the Gulf War in 1991, on the battlefield filled with sand and gunpowder, because the US military was equipped with advanced infrared night vision equipment, it was able to detect the opponent before the Iraqi army's tanks and fired. The Iraqi army only knew that the enemy was ahead only from the cannon fire of the American tanks. It can be seen that infrared night vision equipment plays an important role in modern warfare.
