The 105mm HE shell was first used in 1941, used with the 105 mm Howitzer M2A1(M101) by the United States.

Messier 101 (M101, NGC 5457) was discovered by Pierre Méchain on March 27, 1781

1,260,000.

howitzer is a class of gun with many different variants you need to be more specific. but the max range of a M777 howitzer is 30.1 km (rap assisted).

A large cannon fired at a high angle.

See the related link to the M198 155mm towed howitzer and the M109A self propelled howitzer.