[Janus]

https://en.wikipedia.org/wiki/Gyrojet

[Iannguyen]

The word "rocket" refers to a range of jet-propelled missiles whose forward speed is caused by the response to the rapid expulsion of materials (typically hot gasses) from the rear. The combustion products of solid or liquid fuels usually make up the propelling jet of gasses.
Military forces have a lengthy history with spaceflight, with contemporary rockets deriving from World War II-era weapons. For surveillance, weather tracking, communication, navigation, and other purposes, today's armed forces rely on space-based capabilities.