World Wars I and II had a profound social impact on society in various parts of the world. In the midst of mass deaths and destruction of infrastructure, several fundamental changes emerged that affected people’s living patterns. The first impact can be seen from changes in gender roles. During World War I, many women entered employment sectors previously dominated by men, such as munitions manufacturing and administrative work. This trend continued in World War II, when women were required to take over the work responsibilities of husbands who were away at war. This transformation contributed to a shift in perspective on gender equality, which then strengthened the feminist movement in the following decades. Many governments, especially in western countries, are starting to promote programs to encourage women’s participation in the workforce. The second impact is increased social mobility. War creates opportunities for individuals from various backgrounds to fight for a better life plan. Many residents have been forced to leave their cities, transition to safer areas or look for new jobs. Displacement from areas of conflict results in rich cultural exchange between different communities, although often accompanied by social tensions. Furthermore, the impact on people’s mental health is also very significant. The war left many veterans with post-war trauma, such as PTSD. The stigma of mental health is starting to decrease as understanding about mental health itself increases, and many countries are starting to provide rehabilitation services for veterans and their victims. Changes in education have also had a significant impact. Schools were often forced to close or be converted to support the war effort, but post-war, there was a major push to rebuild the education system. The need to prepare young people with new skills has led to an increase in educational innovation, leading to more diverse and inclusive curricula. On the economic front, the war destroyed many industries, but also created opportunities to rebuild them in better shape. Many nations are attempting to carry out economic reconstruction with a focus on modernization and improving infrastructure. This led to rapid economic growth in the years following the war, despite the social challenges it faced. Culture was also affected, with reflective art and literature emerging in response to the atrocities of war. Many works show pain, loss, and hope, encouraging people to reflect on their experiences of life during and after the war. The social impact of the World Wars was not limited to that time; The resulting changes continue to influence social structures today. Societies around the world are learning from these traumatic experiences, seeking to build a more stable and sustainable peace for future generations.