Order the bots, then peek
A squad on hold is a wall. A squad on attack is a probe. Keep related resources handy when a new campaign still hides a better rally spot.
Engineer the point you want to keep
Sandbags and a mine beat an extra SMG. Tanks need infantry to clear the AT. Check additional guides before you spawn armor into a street of panzerfausts.
Tickets and the next sector
Cap, then build. A empty point you just took is a gift. Skim more game information for extra notes on when to spend a plane.