The need for trajectory adjustments en route to Mars, and by how much, will always depend on the precision of the actual launch from Earth, as this is the stage where most discrepancies arise due to turbulence encountered traveling through the Earth's atmosphere. Several course adjustments are always anticipated because of this, which can include a few 10-20 second thrusts and as many as several hundred short, 1-second bursts. Often, trajectories are calculated to be off-course by as much as 35,000 miles on purpose so that late stage booster rocket detachments don't crash into Mars on arrival.
So, one or two trajectory adjustments may be made en route to Mars earlier during the trip to compensate for the launch, then another one or two adjustments made later after a late-stage booster is released so that the booster sails past the planet rather than follow the main craft into it. Speed adjustments are also made along with trajectory adjustments so that approach velocity is suitable to put the craft into either a temporary orbit prior to landing or a permanent orbit. In short, some type of course adjustment(s) must be made not only to compensate for the unpredictable interference of Earth's atmosphere, but also for reasons of safety and for the avoidance of contaminating Mars with "space junk" that could potentially harbor Earth microbes (things such as booster rockets are not sterilized to the same degree as the main craft).
It's all part of the game.
It must be done incredibly accurately and it is not realistic to think it could be done with no mid-course corrections at all. As it is, the fact that they can even do it with the few small mid-course corrections actually used amazes me.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.