How do I set up repetitive cargo routes? If it's target port Leningrad and homeport Bilbao do I export goods from Leningrad to Bilbao or is it import goods from Leningrad to Bilbao? I might've been emptying Republica del Norte of fuel this whole time...

When playing as the Nationalists player you can click on any hex that isn't your base and click 'New LCU' on the LCU list then 'Ok' and a German RSV LCU will spawn on the hex.

Depending on the replacement model you have selected, encircled forces within a base can replace any destroyed or missing squads by spending supply.
This can be really annoying when you're trying to take a well-fortified base because the enemy can just replace their losses immediately and it will ...