This was Redstone, 21m high:
This was Atlas, 25m high
This was Titan, 31m high
All were liquid fueled, unlike the minuteman, which used solid fuel. The idea of using solid fuel to carry humans was considered crazy right up until the Space Shuttle, which uses 2 solid fuel boosters.
Here's a Minuteman II, 18m high:
The only thing you should feel when shooting a terrorist: Recoil.