Tanks And Zeppelins
Tanks and submarines were the two military vehicles that (to the best of my knowledge) were introduced during World War 1.
tanks & airplanes
Two military vehicles first introduce in World War I were the armored tank and self-propelled artillery. Both greatly increased the number of people killed during the war and provided significant advantages to the countries who used them.
Swedish botanist and physician Carl Linnaeus is credited with introducing the binomial nomenclature system, where two words are used as the scientific name for an organism, as part of his work in developing the field of taxonomy.
The wafflecopter.
Two military advances first used during WW1 were weapons and tactics.
Trench warfare was one of the new forms of warfare introduced during World War 1. Another new form of warfare was chemical warfare.
The British tank, and the trenches.
The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.The two leaders elected to lead both the government and the military in ancient Rome were the two consuls.
John Milsom is a geologist known for his work on the topic of physical properties of rocks. He has written several papers and books on subjects such as rock physics, seismic waves, and the interpretation of geophysical data.
Adolf Hitler first introduced it during the war periods and it took off around the world.