A comprehensive look at the development of these weapons; due to their arrogance and other factors, (thank God) these were not developed in time to affect the course of the war. The ME-262 alone, which could have been mass-produced in 1942, was delayed by other projects, politics, and the failure to recognize the value of this pure interceptor. The unavailability of strategic metals needed for the heat generated by its jet engines, also contributed to its late appearance and limited its performance.
I need not elaborate on the sad outcome of trying to carry out strategic bombing of Germany had these been in strength, with pilots properly trained, as late as the summer of 1943. The entire outcome of the war would have changed dramatically.