Operand is a 'move' for a Unit.
Can be done by Ground or Air.
Earliest debate on strategy, for operand, is German on Turn 1 to 3.
Should Gerry operand (thus pay) to have units moved (aka operanded) quickly to attack Low Countries/France.
It really comes out the same. Speed works, if you get the weather early as Germany.
Many players prefer to march (not operand ground units) use MMPs for more units or tech.
You'll need proper supply 5 or more on both ends, connected with trains. Air, well, they fly. Super expensive for them.
Without Him, I could do nothing
Without Him, I'd surely fail
Without Him, I would be drifting
Like a ship without a sail