Jim Mattis was the 26th U.S. secretary of defense and a former marine commander, best known for his glorious contribution to the American military expeditions in the Gulf War, the Afghanistan War, and the Iraq War. He was born into a middle-class family and was one of the three sons of his parents. His mother was associated with the American troops as a stenographer during the Second World War. Following his high-school graduation in 1968, Jim joined the ‘U.S. Marine Corps.’ He was known as an excellent soldier and was quickly promoted to various high-ranking positions in the marines, such as second lieutenant, lieutenant colonel, brigadier general, and major general. He participated in the Persian Gulf War, the Afghanistan War, and the Iraq War and earned many honors, such as the ‘Edson’s Eagles.’ He read a lot and emphasized on the importance of knowing a country’s history before going to fight there. In 2013, he retired from the ‘Marines,’ and in January 2017, he was instated as the secretary of defense under President Donald Trump. However, owing to several issues with Trump, he resigned in December 2018.