It depends on the game and the situation. For example, in Red Alert I had no problem sending hordes of infantrymen to their deaths. If I could win with minimal casualties, so much the better, but sometimes a meat grinder is inevitable.
In more modern games, particularly those where units gain experience and grow as time goes on, I find myself getting attached to certain units. I might not care about the five units of town militia I just sent into the teeth of a siege force as they broke the gates. I only raised them to combat the siege anyway. But that unit of Jinetes that I've sent out the back gate to harass the enemy siege equipment are my original border patrol! I've been commanding them directly since the start of the game. They've gained enough experience to take out dismounted knights and still come back for more. Those sort of units I get genuinely attached to.
Even town militia aren't exempt. The tiny force that held off six sieges at Bologna before help arrived to swat the Holy Roman Empire. The one bastardised little unit that held through it all, cobbled together from the remains of others. The units that you've been through a story with. Those are the ones you get attached to.
In more modern games, particularly those where units gain experience and grow as time goes on, I find myself getting attached to certain units. I might not care about the five units of town militia I just sent into the teeth of a siege force as they broke the gates. I only raised them to combat the siege anyway. But that unit of Jinetes that I've sent out the back gate to harass the enemy siege equipment are my original border patrol! I've been commanding them directly since the start of the game. They've gained enough experience to take out dismounted knights and still come back for more. Those sort of units I get genuinely attached to.
Even town militia aren't exempt. The tiny force that held off six sieges at Bologna before help arrived to swat the Holy Roman Empire. The one bastardised little unit that held through it all, cobbled together from the remains of others. The units that you've been through a story with. Those are the ones you get attached to.