How were wars in the 18th century fought what type of weapons etc you mean how How can you compare them with the 20th century ones?

Answer 1

You might be referring to the 1800's when you state the "18th century". The 1800's was actually the 19th century. The 1900's was the 20th century. 1. For infantry fighting; the main change was from muzzle loading firearms/cannon in the 19th century to breech loading cartridge firearms/cannons in the 20th century; plus the machinegun (which would not be possible with muzzle loaders). 2. 20th century navies were all steel, had submarines, and aircraft carriers. 19th century was transitioning from wood to steel, with experimental subs, and on the drawing board aircraft carriers (dreams). 3. 20th century saw men fighting in the sky. That was only a dream before the 20th century.