Even though Glasslands states that half of the S-IIs survived augmentation, this is completely wrong.
A total of 57 Spartan-IIs survived the augmentations.
Here are all the unidentified S-IIs.
2 committed suicide.
3 Spartans died when they jumped out of the Pelican during the Fall of Reach.
3 Spartans of Delta Red are possibly MIA, but most likely KIA during Reach.
11 Spartans of Delta Red are most likely KIA during Reach.
1 unidentified died during Harvest (most likely Daisy-023)
Here are all the “official” MIA Spartans, and Spartans with unknown statuses.
MIA:
Jai-006
Randall-037
Douglas-042
Jorge-052 (while declared KIA, hints suggest that the Corvette he was in went somewhere.)
Mike
Unknown:
Keiichi-047
Carris-137
Joseph-122
(These Spartans are last seen alive in 2552, it is unknown if they are alive by 2553)
Victor-101
Black-One
Black-Two
Black-Three
Maria-062
Here are all Spartans that are confirmed alive by 2553.
Naomi-010
Linda-058
Kelly-087
Fred-104
John-117
All other Spartan-IIs that are not listed were confirmed KIA during the Human-Covenant war.
Spartans that apart of groups such as Omega Team will not be counted as unknown Spartans.
So far, 57 Spartans seemed to have survive the augmentations. It is possible that some of them were crippled in some way but only needed little treatment.
7 Spartans were crippled. 1 of which was rehabilitated.
So that means that a total of 11 Spartans died from the augmentations.