The tank is the obvious answer here, but did you know that the first armored personnel carrier (callled the Pig) was also introduced in WW1? Truck transport, artillery tractors, and armored cars were introduced in the early 1900's before the war.
The tank and other motorized vehicles replaced horses. Some armies still had horse cavalry during World War 2, but they were hopelessly obsolete. Modern armies kept the unit names "cavalry" for mechanized armor, and later for helicopter units (air cavalry).
Machine GunsTanks
chemical warfare was prevalent , later outlawed by the Geneva convention
Tanks were introduced during WWI as a counter to the then common trench warfare. While they protected crews as they advanced upon opposing forces, they were not used effectively by commanders because the concept of armored tactics was new (although today, the tank is considered a descendant of cavalry and employs similar tactics). Early tanks also suffered from numerous mechanical breakdowns, and their crews would be stranded in the middle of a battlefield with little recourse.
The submarine became a powerful naval weapon in WW 1. Also, the British introduced the tank in the same war. It was an armored fighting vehicle with a canon. Air warfare also became a significant part of the war.
The exploding shell.
Machine GunsTanks
New- Poison gas, tanks, airplanes Improved- Machine guns, artillery, submarines, dirigibles, and small arms.
Mustard Gas was introduced into warfare in September of 1917.
World War 1 introduced aerial warfare with airplanes and trench warfare
battlefront trenches airplanes and tanks. battlefront trenches airplanes and tanks.
It was during WW1 that airplanes and tanks were introduce in warfare.
Trench warfare was one of the new forms of warfare introduced during World War 1. Another new form of warfare was chemical warfare.
It was during WW1 that airplanes and tanks were introduce in warfare.
The machine gun changed warfare
During World War Two, the first mechanized warfare was used in fighting. This was in the form of tanks and airplanes.
Both the tank and the airplane were both first used in a military context during World War I (1914-18). Aircraft combat began shortly after the war started in 1914, but didn't become a serious affair until mid-1915, when effective mountings of forward-firing machine guns enabled the creation of the first "fighter" aircraft.Likewise, the tank was first introduced at the Battle of the Somme in 1916.Thus, no war actually began with the first introduction of tanks and aircraft.Some people would claim that the concept of mechanized warfare began with introduction of the tank and aircraft. In my opinion, however, this is incorrect, for several reasons:Mechanized Warfare, while benefiting from aircraft, does not require them. Mechanized warfare is a land-based strategy.Tanks are NOT sufficient for Mechanized Warfare - a significant motorized (or mechanized) infantry capacity is also required, as is a completely motorized logistical supply chain.The tactics involved with Mechanized Warfare and the overall strategy to employ those tactics requires certain minimum technological capabilities of equipment, none of which were present during WW1.The actual theory of mobile armored warfare was not developed until after World War 1, and frankly wasn't even remotely usable in terms of practical application of available machinery and more mature tactics until the early 1930s.Thus, while having tanks is certainly a prerequisite to developing mechanized warfare strategy, it is not sufficient. And, aircraft are orthogonal to mechanized warfare.meachanized warfare
Chemical weapons (warfare)