The British FV433 105mm self-propelled howitzer. Not long ago, the Thai Army conducted a test firing of the proposed CS/AH2 105mm howitzer to enhance its combat effectiveness. Not only Thailand, but also multiple countries around the world have announced the presence of 105mm howitzers in their weapon procurement lists over the past year. In some local wars and military conflicts, the M101 105mm howitzer and M56 105mm howitzer also frequently appear on the front lines, demonstrating their youthful characteristics. In some classic war films of the last century, scenes of concentrated artillery fire shooting in clusters appeared frequently. If we observe carefully, we will find that these artillery pieces mainly come from 105mm howitzers, which have a simple appearance. After several rounds of artillery fire, they can be quickly towed by trucks or jeeps, becoming the core of firepower for urban siege and infantry combat at that time. During the Gulf War, the US Army continued to use the M2A1 105mm howitzer. More than 60 overseas armies have equipped this type of howitzer. With the advancement of technology and the evolution of war forms, the status, role, and application of traditional howitzers are quietly changing in the face of the powerful firepower requirements of modern warfare. What role did the 105mm howitzer play as a veteran of the two World Wars? Can the 105mm howitzer with relatively insufficient range and firepower still have a place in modern warfare? How will it develop in the future? Please refer to the interpretation in this issue. Born in the smoke of gunfire and developed in twists and turns, the 105mm howitzer belongs to the category of light field artillery, which has the characteristics of light weight and easy maneuverability. It can be quickly deployed by tractor or helicopter to strike against enemy forces. In the early 20th century, the 105mm howitzer was popular in the army forces of countries such as the United Kingdom and the United States, and as the main artillery, it participated in many important wars. Especially in World War I and World War II, it was widely used and played a significant role, favored by armies of various countries. The two world wars are also accelerating the evolution of war forms. As tanks gradually stepped onto the historical stage and the size of infantry gradually decreased, this posed significant challenges to the development of this type of howitzer. Due to its limited charge and relatively low explosive power, coupled with the continuous development and upgrading of tanks around the world, this type of howitzer is difficult to effectively damage armored targets. After the end of World War II, the world entered the Cold War, and many countries firmly believed that "truth is only within the range of cannons.". The Soviet Union and other countries decided to increase the main caliber of their army artillery and phased out a batch of in-service 105mm howitzers, replacing them with 155mm howitzers with greater power and longer range. Artilleries have flourished towards large calibers, and various types of large caliber howitzers have gradually become the mainstay of field artillery. In contrast, the 105mm howitzer seems to have been penetrated into the cold palace, with fewer and fewer new models. But the development of this type of howitzer did not stop, but continued to move forward in twists and turns. When the armies of various countries around the world mainly rely on air firepower support and large caliber artillery firepower support, countries such as Britain and France have not given up on the development of small caliber howitzers. In the eyes of the British, small caliber howitzers are low-cost