Wrong on 2 out of 3.

The Germans had a very well developed radar system from the beginning of the war. The Freya-gerat for long range search, Wurtzburg for short range ground intercept and control and Lichtenstein for short range airborne interception.

It is true that Nazi Germany didn't have GPS (which requires satellites in orbit, something noone could do in 1945), but they did have a range of radio navigation aids of which the Knickebein system was the widest deployed (they also had the X- and Y- beam systems used for both bombing and interception of allied bombers).

The Knikebein system was based on the Lorenz blind landing system, which is still being used today on all large airports, as the simplicity of the system requires only a functional AM-radio receiver to work (you can basically hear if you are on course or not as well as which side you have to move if you are not).

Yours Yazeran

Plan: to go to Mars one day with a hammer.

Doh, this should have been a reply note to the one a level higher up....

Yazeran

Except that Nazi Germany basically invented all the technologies used in modern warfare

1) Long endurance diesel electric submarines (type XXI, Elektroboote)
2) Long range ballistic missiles (A4/V2)
3) Jet propelled aircraft (both fighters, bombers and recon, notably ME-262)
4) Cruise missiles (V1/FGZ-76)
5) Smart bombs (Fritz-X and HS-293 glider bombs)
6) Inertial navigation (A4/V2)

Systems under development/not deployed
1) Nuclear bomb / nuclear power
2) Guided surface to air missiles (Wasserfall)
3) Guided Air to Air missiles (Ruhrstahl X-4)

All in all, only the digital computers (of which Nazi germany also made the first Turring complete one (Zuse Z3) have come later.

Yours Yazeran

Plan: To go to Mars one day with a hammer