I notice a strange legion multiplication. I got 10 legions from invasion tech and 5 from a general. I put some as defense on planets, took some to war and some remained in the pool. Some time after I have 10 legions in two transports, 5 legions stationed as garrisons, 3 in the pool and I lost 3 in war. That's 21 legions all together ... ?

Edit: I forgot 3 more legions that are in a further transport that is currently in orbit at a planet. So that makes 24 legions.

Can it be that the legion number increases after each invasion? I just invaded an undefended planet with 8 legions, before the invasion the resource bar at the top told me I had 15 available legions, after the invasion that number jumped to 23 and reamined there although I moved my transports (still carrying 8 legions) away from the planet.

A new observation: one of my enemies put within one turn 3 legions on his planet. How is that possible?