​Until the beginning of the French Revolution, Napoleon’s military career was going to be subject to very little alteration due to the inability for lower nobility soldiers to rise up to prominence within the French army. Napoleon and his peers had no chance of rising to ranks of General and Colonel as a result of the oppressive nobility requirements for high ranking officers. Luckily for Napoleon, however, the class system in France was abolished by the Revolution, allowing Napoleon to rise to power based on merit, not familial background. Napoleon’s military career changed drastically during 1789 to 1796 due to the political climate in France at the time, allowing the young soldier to rise rapidly through the ranks. Constant political upheavals and Napoleon's military success gives him the upward mobility he would have never seen otherwise. Although Napoleon is later thrown in jail and his military rank stripped due to his connections to the Jacobins and Robespierre, politics from 1789 to 1796 still positively affected Napoleon’s military career, and propelled him into power. 

United States intervention in Vietnam began after the French were defeated by the Vietnamese in 1954 under Ho Chi Minh at Dien Bien Phu through the use of guerilla tactics, and the United States began training the Army of the Republic of Vietnam (ARVN) in 1955. In an effort to prevent direct military conflict between the United States and North Vietnam, the US planned to simply aid the Southern Vietnamese, such as advising them on strategy or training troops; this did not work unfortunately. The soldiers in the ARVN were lazy, cared little about the conflict and found little battlefield success, leading to eventual deployment of US forces to combat the "domino effect" of communism in Vietnam. 

George Washington was losing troops to Smallpox and made the controversial decision to conduct mass inoculations for his troops.  This was done in secret and with a risky method (variolation) but it payed off.  Some believe it was one of many factors that lead to victory.

Tunnel Rats were essentially US soldiers who would clear out Vietnamese tunnels underground. This was one of the worst jobs to have during the war, as it was extremely dangerous. The Vietnamese would dig intricate tunnel systems underground that were usually very small in diameter, so US tunnel rats would strip down their gear to just a flashlight and pistol. What made this job dangerous is the lack of space to move around, the lack of light so the enemy would hide in the dark, and the amount of Vietcong that could be in one tunnel.