Lt.Stone said:
Dont attack with units you dont want to lose, strategic units are rare for those who didnt buy them, attacking zhg with them and losing it will make you sad and want to quit. So its best to leave them at home, tucked away nicely in your bunker, safe and sound...
I'm going to agree to disagree here:
Strategic units support between 20 and 50 units, making them significantly more powerful, without increasing the cost of the units lost.
If you only sent 1 strategic unit with 50 infantry (for example) you would have to lose 50% of the infantry to lose the strategic unit.
If you are getting close to 50% losses with boosted infantry: you are hitting locations above your means, or not sending enough other troops. (Like Hvy Infantry)
So go ahead and use strategic units on locations. (One of the safest places to use them.) Just do so carefully.