ok,,i have posted this on the mech hero site,,and ill tell you too
to keep from losing your mechs you must send them out at nite before you sleep..
if you have a raptor (speed 10) you need to pick a city thats say..10o points or less thats 40 units away.. it will take your mech 4 hours to get there,,then 4 hours back..and at 100 points the city will not have a mech to fight you.
combine this with bunkers and your city will be safe for many weeks to come..that is until the big guys show up
~D