As with everything else, when there is a need, things get changed or fixed or improved. You don't know if things need improving until you use them. Weapons were needed that performed better, shot farther, shot more with more accuracy. Tactics change when ones are used that fail. Failure is probably the best motivator for fixing things. Someone once said "Necessity is the mother of invention." We learned during WW1 that Air superiority would win the battles. If you controlled the skies, then you controlled the battle and eventually the war.
Fire artillery shells at the enemy.
Trench warfare.
The "reach-around" - it was a powerful and explosive tactic.
yes it did
Their main tactic was Blitzkreig.
There can be no doubt that the most deadliest weapon of world war 2 was the nuclear bombs that dropped on Hiroshima.
It was used as a bio-weapon by the mongols. They launched dead bodies of the victims of the plauge on catapults into the enemy's city
The submarine.
Yes they used there surrender tactic
The most common one that was used as a weapon in World War 1 is called the Artillery
The Best tactic is, attacking from the flanks.
Dick