You and your group have been through a massive battle with a large group of zombies, your two way radio is going nuts, a scout from your group has spotted yet another large wave of zeds headed your way. You notice that some of your group has been wounded, or has become completely exhausted from the fight. To ensure the survival of the remaining members, would you ditch the weakened members, or would you instruct members of your group to not fight and help carry the wounded even though not leaving a man behind could jeopardize the group's chances of survival since now you are moving significantly slower than before. Also, instead of fleeing, how many of you would stand and fight with hopes that after this attack, you will be afforded some much needed R&R. For sake of argument, the zombies in question do move at any pace, some crawling, some walking, others running, though, none very coordinated, so climbing stairs and ladders and negotiating simple obstacles is still an issue to them.
Oh that would depend totally on my group, if i'd have the group im planning on, then i would bunker up and prepare for the coming onslaught. How i'd bunker up would depend highly on the enviroment, area and the amount of zombies.
In a farmland/woodland during the warm half of the year, the group would look for any hill, open field or farmbuildings. from there on, treating the wounded/exhausted and basic barricading would be of highest priority, In the meantime, we would try to radio through a Mayday on all AM/FM channels available.
Once the zombies come into sight, everyone with longer-range weapons would open fire with assigned targets (mostly bolt-action and semi-automatics) while the shotgunners load up and prepare the quick-loaders. when the zombies have gotten through the first perimeter (50m from the group) everyone would open fire freely.
once they get within 25m of the group, we would retreat into the building/to the top of the hill and simply keep shooting. if it would be a two-story building, we'd go upstairs, raze the stairs and try to endure the undead siege.
Thats my $0.02
Golden Rule, Double-Tap! Make sure Dead things really stay DEAD!
You never leave anyone behind.
Ever.
Whatever the situation, whatever the time, place, people, wounds, general health, ammo, food, whatever it is, you never leave anyone behind.
Do your best to get safe (for the moment), fight like hell, do whatever it is you can do, Live as best you possibly can, but you never leave a man behind.
"Fate is like a woman; She favors the bold"
-Napoleon Bonaparte
"Let's blow it up!"
-Me
Carpe Cervesa
Everyone is responsible for their own life. I will look out for them and help them when I can, but if they want to live they will. If someone falls and doesn't get up, or at the expense of others begs for help, then they are lost. Heroes die often.
If you are in a defensible position, tend to the weak. If you are on the move, in a nomadic fasion, carry them.
If you are running from a direct threat, choices become much harder. Closeness of relationships, value to the group, and other objective considerations must be contemplated.
My Mom (very close personal relationship) is a registered nurse (very valuable skill set). I would do whatever I could keep her with a group, although she is 75 years old but in reasonable good health.
I would not leave my son or wife behind under any conditions, and my son is mildly Autistic. My wife has few survival skills, except she was a soldier once and can shoot and clean my AR-15 and several of my other weapons. She has some knee problems and cannot walk for more than a trip to the grocery store (an hour or so) without pain and knee swelling afterward.
But I would not abandon those I love. If we were on the run and someone could not go on, I would consider a mercy stroke rather than abandoning them to the Zeds.
Of course, that's just my opinion. I could be wrong.