The first true modern combat boots were issued during World War II .
The black shined combat boots The black shined combat boots we seen in the fashion world dates to the Vietnam War. In 1957, the US Army switched to shined black combat boots, although the transition to black boots was not completed until late in the Vietnam War, which also saw the introduction of the jungle boot. In fashion combat boots were introduced by the goth, punk, grunge, heavy metal, industrial, skinhead, and BDSM subcultures, however, they are becoming more and more mainstream .
World war II 1939-45
Death toll 55 000 000 
Vietnam War 1965-73
Death toll: 1 700 000