Very unlikely, considering the fact that the Quarians were very peaceful and civilian armament would've been rare. I doubt that first of all most of the survivors would be children and that survivors would fight back against a foe that outnumbers them by a large magnitude. Some might fight back, but to expect that from everyone of the multiple million survivors is ridiculous. Quarians are barely alien and humans wouldn't act that way either.
There is nothing that indicates they were more peaceful than others, maybe more peacful than the Krogans, I guess.
We know nothing about civilian armament, it's also possible the government could have provided plenty of armaments for the civilians when they got "scared", just like they did in ME3 when the civilians and children were conscripted as cheap cannonfoder. They don't seem peaceful in ME2 or 3.
Also, like mentioned many times before,
Rannochs environment was badly damaged by the war and the geth have spent 300 years restoring it and it still isn't completely restored. Given the weaker than humans and weaker than the galactic average immunesystem they likely had severe health issues from contaminated air, water and food. Nevermind a lack of food since a lot of the food production would have been suspended.
Geth workers drafted for the war would have stopped produsing grain and food stuff for Quarians, the Quarians likely had problems managing agricultural needs. Bilions could have starved. There was likely a severe lack of medical services and medication. With the military taking priority just like they do in the Migrant fleet.
So, we got:
Starvation and malnutrition.
weak immunesystem and contaminated air/water.
Likely lacking medical services and medication.
A war where people are shooting and bombing each other.
The whole planet is a battleground, it's global, it's even happening on other colonised planets.
Not enough capacity to airlift billions of people of planet or buy a ticket elsewhere.
A lot of civilian crafts were likely commandered by the military for their campaign.
Secondary casulties where civilians and children are killed when forts and bunkers are bombed, gased or nuked.
The Civilian population would be less likely to have had protective combat suits back on those days, the military had the best environmental and protective armor. It's common that more civilians die in a war than military personel.
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The Iraq war bodycount forexample, a war in which "smart weapons were used" that were supposed to keep civilian losses low;
Documented civilian deaths from violence
123,180 – 137,063
Total violent deaths including combatants
188,000
More than 70% of the casulties are still civilians.
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Same with WW2, most of the dead were civilians, and most peopel died from famine or diseases.
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In this case it was still possible to get food and medicine for the people even if supplies did suffer, but the whole planet Earth wasn't disabled and unable to provide supplies. It was possible to get supplies. Immagine if the whole planet had been bombed, nuked, was set on fire and all agriculture and roduction was halted, nevermind chemical and bioligical contamination.
On Rannoch
Most people likely died from starvation and diseases, contamination, something like 90%.
9% might have died as a result of the armed conflict and direct weaponsfire. 90% of these were likely Civilian hiding with or "protected" by the Quarian military.
Then lets say 1% escaped the planet. Most of those were likely military, with a few civilian refugees that survived the lack of food, medical care and inferior protection against infections, and contamination.
The people escaping would have been the military personel that eventualy formed the military force of the flotilla and the Admiralty that would rule the Quarians for the following 300 years, and a few lucky civilians, some of whom might have had relatives in the military or influential political figures.
How would you expect billions of people to fare if food production is put to a complete halt, the air and drinkingwater supply becoems contaminated(chemical, biological, radioactive). The population has a weaker than normal immunesystem. Medication and medical services are likely to be compromised.
I would expect an enormous deathtoll even without a shooting war going on in that situation.
Famines have killed off millions of people and large percentages of the population in the past without there being a war that halts production to 0.
The Geth didn't need to worry about famine as long as they had some power generation. Medical issues were also minimal as long as they had spare parts or alternative platforms/servers to transfer to if they got damaged.
Retour en haut
That still requires me to think. 
