It is NOT a major bombardment. It is about the payload of ONE non-nuclear B-52.
For true war need at least 1 million ground troops. Have to contain them though because they can squirm out like rats in a sinking ship at night by stealth. The border most plausible for escape is Iraq and it’s huge. You’re basically having to surround and contain them.
Of course I’m not counting the thousands already parading to Europe as “refugees.”
I think the B-52 could hold a lot more than 20 bombs. More like 50 plus 500 lb bombs plus a few (30?)1000 pound bombs.