The idea that Checkley was formulating was Commando, a title that is still with us to this day albeit in a somewhat watered down manner. What Checkley did was rather than following the trend of imitating Fleetway's product, he actually reworked the formulae and in doing so created a classic comic.
I've certainly learnt a lot in reading these posts. Perhaps most of all that until Commando came along a Fleetway man would never go into battle wearing a torn shirt.
If you haven't done so already go and have a look at Achtung Commando!!! (part 1 part 2 & part 3) at Cloud 109.