White Uniforms during Episode 7 when E Company is attacking Foy

Apologies if this has been asked before, but I couldn't find anything about it after searching the Subreddit. I'm on my yearly rewatch and I noticed during the initial Push that Easy company does on Foy in episode 7, there are some soldiers that have white uniforms. I was wondering who those guys were/why they had white uniforms when a lot of others didn't.

Thanks in Advance.