Yep - I know. But...it's real and has been uesd by every country's military for years. All the enemy had to do was be able to take off on the taxi ways instead, unless they were cratered as well. In AH, since grass and asphalt have the same texture, one could just take off on the grass parellel to the runway, unless that was cratered as well.
It was great fun in Fighter Ace back when and I don't even like to fly bombers. The crater duration in Fighter Ace depended on the ordnance used. As I recall, one Lancaster with 100# bombs (I think) could be dropped across one runway and both taxi ways and shut down a field for about 10-15 minutes.
Real? Yep.
Fun? Yep.
USBP1969