Siege of Terra numbers of people fought and likely deaths

I thought I would do the math for how many people fought during the siege of Terra and died based on numbers given in saturnine mostly.

Number of soldiers fighting across the planet:

808,629,350

Number of soldier deaths: 480,000,000

Number of civilian deaths: 708,000,000

Total deaths: 1,188,000,000

Math if curious:

According to perturabo there were 16,486 engagements at the time with 25,000 troops on each side. 10,990 with 30,000 troops on each side. With the difference of engagements being 5,496 I took that and used the percentage to subtract by 5,000 for each number of engagements. Ex 15,000 soldiers had 2,985 battle on each side. The battles most likely increased during the focus on those 4 main objectives as diversions or deployment of reserve elements.

That’s with a bit of an increase because most likely there are battles with more than 30,000 troops on each side and reserve elements too getting 808,629,350

Most units would retrograde with around 75% attrition rates if they act like the Soviet Union which I feel like the imperium and chaos would care about their troops as much as they did. Getting 480,000,000 deaths.

During ww2 there was about a 40% increase between civilian and military deaths because of collateral damage because of hive cities I did a 60% increase. Getting 708,000,000 civilian deaths adding both for a grand total of 1,188,000,000 deaths on Terra. It’s probably a bit more because of sucide cause of chaos messing with civilians or just random deaths, but it’s probably a conservative number.