how to upgrade units

[Captain Howdy]

How do you upgrade several units in the same city without having to click on the city each time you want to upgrade a different unit?

 

[MerakSpielman]

Hold down shift and click the little icons for each unit you want to upgrade, then hit the upgrade button. If you can afford it, they should all upgrade.

 

[Captain Howdy]

Hold down shift and click the little icons for each unit you want to upgrade, then hit the upgrade button. If you can afford it, they should all upgrade.

thanks MerakSpielman