The first use of hot air balloons was in the American Civil War for surveillance of troop movements.
To spy on the enemy
The Civil war
Hot air balloons
Hot air balloons were used to spy on the enemy. They were also used to communicate, send supplies, and drop bombs.
This may not help, but I didn't think it had ANYTHING to do with hot-air balloons...
The first use of hot air balloons was in the American Civil War for surveillance of troop movements.
bbksu
telegraphs hot air balloons spies/couriers telegraphs hot air balloons spies/couriers
Hot air balloons
To spy on the enemy
The Civil war
Hot air balloons
Hot air balloons
the civil war of which country?
They were used for reconnaissance of troops in the civil war. They were the first type of "spy" from the air.
There are traditional hot air balloons, special-shaped hot air balloons (such as animals, objects, or characters), and solar-powered hot air balloons that use solar energy to heat the air inside.