Servo Motor without delay

Hello, I am newer to Arduino and I am trying to find resources on eliminating a delay after a servo has been activated. For my project I am using a servo that rotates ~45 degrees, I am needing it to rotate to this point and then to return back immediately. Currently the servo rotates to the desired point but then delays for roughly 150ms before it is able to return back to zero. Is there any way to cause the servo to activate, go to 45, immediately return?

I've looked through the forums but may have over looked if this has already been answered. I am not currently home so I cannot post the code. Thanks for any assistance!

Return back to where? Servos can't move from point to point instantly, a certain amount of time, though small, is required according to how far it has to move. For example a servo's rated speed might be 0.12 seconds (120 mS) per 60 degrees, to move 45 degrees would require 90 mS, if you commanded a different position before 90 mS was up, it might not make it to 45 before dashing off somewhere else. Do you know your servo's rated speed? Should be in it's datasheet.
Post your code soon as you can.