in the wake of vs rearward

in the wake of

• Following 

• As a result of 

• In the noticeable disturbance of water behind (a maritime vessel). 

rearward

• The last troop; the rear of an army; a rear guard. 

• The part that comes last or is situated in the rear; conclusion, wind-up. 

• Toward the back or rear of something. 

• Toward the back or rear of something.