Version 1.4.39 - changelist tweaked

A new mode in the combat simulator — simulation of a battle by a city (with tactics and waves);
Ground military exercises are removed;
Amount of fortifications on the battlefield can now be taken into account in tactics rules;
Troops of different countries can't join the same military operation anymore;
Troops which are known to less than 50% of country players have 15% military bonus penalty;
Peacekeepers and shy troops do not affect the size of army in a battle queue;
Defensive military operation can now be cancelled by owner of the targeted city;
A city has to exist at least 12 hours or more, to be used by transport ships to debark troops;
Time to embark or disembark on a coast reduced to 24 hours (48 hours before);
If a military operation has started, it can't be cancelled during a battle by the targeted city.