Later , Shrieve and Frankenstein were invited by Project M to join the Creatures Commandos .
In the alternate timeline of the Flashpoint event , Lt. Matthew Shrieve was ambushed by Nazi soldiers , and then saved by Frankenstein .
Later , Lt. and Frankenstein were invited by Project M to join the Lt.   .
In the alternate timeline of the Flashpoint event , Lt. Matthew Shrieve was ambushed by Nazi soldiers , and then saved by Frankenstein .