Private First-Class S. Milligan was a private onboard the G.F.S. Tyr when it crash landed on Aether and is listed as a Trooper. Milligan won a bet against PFC L. Brouda to do watch duty and was killed by the Dark Splinters, along with PFC L. Brouda and others. It appears Milligan was killed by one or more Splinters while recording his or her last logbook entry.
"Brouda lost the bet, so he switched watch duty with me. I figure this section is nice and safe and boring, which suits me just fine. Let those other pugs guard the hot zone, I... hold on... hey! ...No! Hel--(transmission ends)"