Final answer:
Airplanes were used for reconnaissance and bombing raids during World War I.
Step-by-step explanation:
During World War I, airplanes were used for two main purposes: reconnaissance and bombing raids.
- Reconnaissance: All combatant armies used aircraft for reconnaissance purposes. Pilots would fly over enemy lines to gather intelligence about troop movements, artillery positions, and other valuable information.
- Bombing raids: Airplanes were also used for bombing raids. Pilots would drop small bombs and strafe trenches with machine guns, targeting enemy troops and infrastructure. This tactic proved to be effective in causing casualties and disrupting the enemy's capabilities.