Changes

** Seaplanes and recons aircraft.

** Seaplanes and recons aircraft.

Every group is initially at level 0, and can be upgraded up to level 3 using 1 [[bulldozer]] each time. You can see how many bulldozers you currently possess in the bottom right corner. The effect for each level are the following:

Every group is initially at level 0, and can be upgraded up to level 3 using 1 [[bulldozer]] each time. You can see how many bulldozers you currently possess in the bottom right corner.  

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In the case of the 1st group, '''all level improvements will carry over into future events'''.

In the case of the 1st group, <font color= "green">'''all level improvements will carry over into future events'''.</font>