Short answers, pulled from the story.
The first recorded battle death occurred around 1400 BCE during the siege of Jericho when a soldier died from the weight of a collapsing stone wall. This event highlights the physical demands and geographical constraints inherent in land warfare.
The tank changed land warfare forever on the 1st of July 1916 during the Battle of the Somme. These armored vehicles shattered the stalemate of trench warfare by crossing no-man's-land and crushing barbed wire obstacles.
The German Blitzkrieg in the early years of World War II demonstrated the effectiveness of combined arms tactics. Fast-moving tank divisions supported by close air support and motorized infantry penetrated enemy lines and encircled opposing forces.
The Soviet-Finnish Winter War took place in 1939 and claimed more lives through exposure and disease than through direct combat. Arctic warfare conditions proved deadlier than the fighting itself during this conflict.
The Gulf War occurred in 1991 and tested the endurance of soldiers and the reliability of their equipment in desert warfare. This conflict demonstrated the challenges of operating in arid environments compared to other terrains.